如果您将文档保存用户的uid存储在文档中(例如)，例如 createdBy 请执行以下操作:

If you store in the document the uid of the user who saved the doc in a field called (for example) createdBy you can do as follows:

service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read: if request.auth.uid != null && resource.data.createdBy == request.auth.uid;
      allow write: .... 
    }
  }
}