Why do I have two social security numbers?

There is only one reason why you have two social security, that is, you have two ID numbers. Generally, one ID card corresponds to one number, and your two social security numbers will definitely affect you. If you take your two original ID cards to the second floor of Shuiximen Labor Bureau for registration, you only have one social security number after registration, and the money on the social security number can be merged into one social security number.