The company asked me to do social security. How to run? I come from Hohhot.

I don't know about other areas, but in Beijing, human resources usually do these things. However, it is necessary to constantly run social security, and human resources are not necessarily willing to do it, and there are often delays.

It stands to reason that human resources will ask you for photos, copies of relevant documents and so on to do medical insurance books. If you haven't done it yet, you can urge the human resources to see if they have forgotten you. (Sometimes 1-2 people are omitted, and even a group of people are normal. )

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.