Do enterprises have to buy "5 insurances" together to buy social security for employees?

Yes, the five insurances in social security cannot be paid separately. The types of social security paid by the company include endowment insurance, medical insurance, unemployment insurance, maternity insurance and industrial injury insurance. Pay the five risks together, not separately. According to Article 58 of the Social Insurance Law, the employing unit shall handle the social insurance registration for employees within 30 days from the date of employment. Article 86 of the Social Insurance Law stipulates that if an employer fails to pay social insurance premiums in full and on time, the social insurance premium collection agency shall order it to pay within a time limit or make up for it, and from the date of default, an overdue fine of five ten thousandths shall be added daily; If it fails to pay within the time limit, the relevant administrative departments shall pay the overdue fine of more than one time and less than three times the unpaid amount.

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