The original unit does not lay off employees, can the new unit pay social security?

I can't. According to the query of China Social Security Network, the employee has left the original company, and the original company failed to handle the staff reduction in time, so the new company cannot pay social security for the employee. Only after the original unit has handled the social security relief and stopped paying social security, the new unit can handle the social security increase and start paying social security for employees. Therefore, the new unit can't pay social security unless the original unit is downsized.