Click the Contacts tab in the lower left corner of outlook.

Select Import and Export from the File menu in the upper left corner of outlook.

Select Import to File in the Import and Export window, and then click Next.

2. Select tab-separated values in the Export to File window, and then click Next.

Contacts are selected by default and need not be adjusted. Continue to click Next.

Next, set the saved file name.

3. Use a plain text editor

Replace, save after replacement.

4. still select import and export from the file menu in the upper left corner of outlook.

Choose to import from another cluster or file,

The choice of file type should be the same as before.

Import files Select files that have been changed before.