The social security card was cancelled for no reason.

Does the subject want to ask why the social security card was cancelled inexplicably? The reasons are: long-term non-use, new card, abnormal account.

1. Long-term non-use: the social security card will be automatically cancelled if it is not used for a long time.

2. Apply for a new card: apply for a new social security card and cancel the old one.

3. Abnormal account: The social security card account is abnormal, such as the change of mobile phone number and insufficient account balance, which will lead to the cancellation of the social security card.