diff --git a/src/api/user.js b/src/api/user.js
index a2c0ccb..0de15ee 100644
--- a/src/api/user.js
+++ b/src/api/user.js
@@ -146,3 +146,31 @@ export function oauth() {
     method: 'get'
   })
 }
+
+/**
+ * 获取 OAuth2 统一认证可选账号列表
+ * @param {string} code - 授权码
+ */
+export function getOAuth2Selection(code) {
+  return request({
+    url: '/aiccs-api/oauth2/unified/selection',
+    method: 'get',
+    params: { code }
+  })
+}
+
+/**
+ * OAuth2 选择账号登录
+ * @param {string} code - 授权码
+ * @param {string|number} userId - 选择的用户ID
+ */
+export function selectOAuth2Login(code, userId) {
+  const params = new FormData()
+  params.append('code', code)
+  params.append('userId', userId)
+  return request({
+    url: '/aiccs-api/oauth2/unified/select/login',
+    method: 'post',
+    data: params
+  })
+}
diff --git a/src/router/index.js b/src/router/index.js
index 911622c..04fb637 100644
--- a/src/router/index.js
+++ b/src/router/index.js
@@ -42,6 +42,15 @@ export const constantRoutes = [
       title: '登录'
     }
   },
+  {
+    path: '/oauth2',
+    component: () => import('@/views/oauth2/index'),
+    hidden: true,
+    meta: {
+      roles: ['guest'],
+      title: '账号选择'
+    }
+  },
   {
     name: 'Maintain',
     path: '/maintain',
diff --git a/src/views/oauth2/index.vue b/src/views/oauth2/index.vue
new file mode 100644
index 0000000..00965b5
--- /dev/null
+++ b/src/views/oauth2/index.vue
@@ -0,0 +1,267 @@
+<template>
+  <div class="oauth2-container">
+    <div v-if="loading" class="loading-wrapper">
+      <i class="el-icon-loading" />
+      <span>加载中...</span>
+    </div>
+
+    <!-- 账号选择弹窗 -->
+    <el-dialog
+      title="请选择登录账号"
+      :visible.sync="dialogVisible"
+      :close-on-click-modal="false"
+      :close-on-press-escape="false"
+      :show-close="false"
+      width="400px"
+      center
+    >
+      <div class="account-list">
+        <div
+          v-for="user in userList"
+          :key="user.userId"
+          class="account-item"
+          :class="{ 'is-selected': selectedUserId === user.userId }"
+          @click="handleSelect(user.userId)"
+        >
+          <div class="account-info">
+            <i class="el-icon-user-solid account-icon" />
+            <div class="account-detail">
+              <div class="account-name">{{ user.realname || user.username }}</div>
+              <div v-if="user.realname" class="account-username">{{ user.username }}</div>
+            </div>
+          </div>
+          <i
+            v-if="selectedUserId === user.userId"
+            class="el-icon-check check-icon"
+          />
+        </div>
+      </div>
+      <span slot="footer" class="dialog-footer">
+        <el-button
+          type="primary"
+          :disabled="!selectedUserId"
+          :loading="loginLoading"
+          style="width: 100%"
+          @click="handleLogin"
+        >
+          确 定
+        </el-button>
+      </span>
+    </el-dialog>
+
+    <!-- 错误提示 -->
+    <el-dialog
+      title="提示"
+      :visible.sync="errorVisible"
+      :close-on-click-modal="false"
+      :close-on-press-escape="false"
+      :show-close="false"
+      width="360px"
+      center
+    >
+      <div class="error-content">
+        <i class="el-icon-warning-outline" />
+        <p>{{ errorMessage }}</p>
+      </div>
+      <span slot="footer" class="dialog-footer">
+        <el-button type="primary" style="width: 100%" @click="goToLogin">
+          返回登录页
+        </el-button>
+      </span>
+    </el-dialog>
+  </div>
+</template>
+
+<script>
+import { getOAuth2Selection, selectOAuth2Login } from '@/api/user.js'
+
+export default {
+  name: 'OAuth2',
+  data() {
+    return {
+      loading: true,
+      dialogVisible: false,
+      errorVisible: false,
+      errorMessage: '',
+      code: '',
+      userList: [],
+      selectedUserId: null,
+      loginLoading: false
+    }
+  },
+  mounted() {
+    this.init()
+  },
+  methods: {
+    init() {
+      // 从 URL 获取 code 参数
+      this.code = this.$route.query.code
+      if (!this.code) {
+        this.showError('缺少授权码，请重新登录')
+        return
+      }
+      // 获取可选账号列表
+      this.fetchUserList()
+    },
+    fetchUserList() {
+      this.loading = true
+      getOAuth2Selection(this.code)
+        .then(response => {
+          const { code, data, msg } = response
+          if (code === 0 && data && data.length > 0) {
+            this.userList = data
+            this.dialogVisible = true
+          } else if (code === 0 && (!data || data.length === 0)) {
+            this.showError('未找到可登录的账号')
+          } else {
+            this.showError(msg || '获取账号列表失败')
+          }
+        })
+        .catch(error => {
+          this.showError(error.message || '请求失败，请稍后重试')
+        })
+        .finally(() => {
+          this.loading = false
+        })
+    },
+    handleSelect(userId) {
+      this.selectedUserId = userId
+    },
+    handleLogin() {
+      if (!this.selectedUserId) {
+        this.$message.warning('请选择一个账号')
+        return
+      }
+      this.loginLoading = true
+      selectOAuth2Login(this.code, this.selectedUserId)
+        .then(response => {
+          const { code, msg } = response
+          if (code === 0) {
+            this.$message.success('登录成功')
+            this.dialogVisible = false
+            // 跳转到首页
+            this.$router.push({ path: '/redirect' })
+          } else {
+            this.$message.error(msg || '登录失败')
+          }
+        })
+        .catch(error => {
+          this.$message.error(error.message || '登录请求失败')
+        })
+        .finally(() => {
+          this.loginLoading = false
+        })
+    },
+    showError(message) {
+      this.errorMessage = message
+      this.errorVisible = true
+    },
+    goToLogin() {
+      this.errorVisible = false
+      this.$router.push({ path: '/login' })
+    }
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.oauth2-container {
+  height: 100vh;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: #f5f7fa;
+}
+
+.loading-wrapper {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  color: #909399;
+
+  i {
+    font-size: 32px;
+    margin-bottom: 12px;
+  }
+}
+
+.account-list {
+  max-height: 300px;
+  overflow-y: auto;
+}
+
+.account-item {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 16px;
+  margin-bottom: 8px;
+  border: 1px solid #e4e7ed;
+  border-radius: 8px;
+  cursor: pointer;
+  transition: all 0.3s;
+
+  &:hover {
+    border-color: #3296FA;
+    background: #f5f9ff;
+  }
+
+  &.is-selected {
+    border-color: #3296FA;
+    background: #e8f4ff;
+  }
+
+  &:last-child {
+    margin-bottom: 0;
+  }
+}
+
+.account-info {
+  display: flex;
+  align-items: center;
+  flex: 1;
+}
+
+.account-icon {
+  font-size: 36px;
+  color: #3296FA;
+  margin-right: 12px;
+}
+
+.account-detail {
+  flex: 1;
+}
+
+.account-name {
+  font-size: 16px;
+  font-weight: 500;
+  color: #303133;
+}
+
+.account-username {
+  font-size: 13px;
+  color: #909399;
+  margin-top: 4px;
+}
+
+.check-icon {
+  font-size: 20px;
+  color: #3296FA;
+}
+
+.error-content {
+  text-align: center;
+  padding: 20px 0;
+
+  i {
+    font-size: 48px;
+    color: #e6a23c;
+    margin-bottom: 16px;
+  }
+
+  p {
+    color: #606266;
+    font-size: 14px;
+  }
+}
+</style>