Is the employment registration certificate number the social security card number?

Yes Legal analysis: the employment card number is the social security card number. Legal basis: Article 4 of People's Republic of China (PRC) Social Insurance Law: Employers and individuals in People's Republic of China (PRC) pay social insurance premiums according to law, and have the right to inquire about payment records and personal rights and interests records, and ask social insurance agencies to provide social insurance consultation and other related services. Individuals enjoy social insurance benefits according to law and have the right to supervise the payment of their own units. The Social Security Card of the People's Republic of China is an integrated circuit (ic) card issued by local human resources and social security departments for various business fields of human resources and social security.