Can Shenzhen's unit social security transfer to individual social security only pay medical insurance?

Social security is paid by itself, and medical insurance must be paid together with the pension, not separately. If it is a local urban hukou, you can participate in the local urban residents' medical insurance, and the treatment is slightly lower than the employee's medical insurance, which can be paid separately. It is illegal for a company not to pay social security to its employees. You should consider whether to continue this kind of company.

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