Does paying social security tax credits in two places have an impact?

The social security system will **** enjoy the data, a person may not buy social security in different places at the same time. The social security of each person can only be insured one, because the insurance is through the person's identity card number to participate in the insurance, an identity card can only pay a, so the duplicate identity card number of the case is unable to apply for insurance, that is to say, even if it is a change in the city of work, but also can not repeat the payment. And even if you pay two social security, you can only enjoy the reimbursement of one. As the current national social security is not networked, the local social security bureau has no way to know whether the participant in the field has been insured, so there are a lot of participants at the same time in the two places to participate in the social security, but it should be noted that the payment of two social security does not mean that you can enjoy two treatments at the same time, and when you finally enjoy the treatment, you can only enjoy a treatment. At the same time to pay two places of social security, pension insurance is only counted as a payment of years, the other can only be returned to the personal account of the amount of pension and medical care, when the refund of money than the money used to participate in the insurance is much less, so the small easy here to recommend that we do not buy two social security at the same time.