The generation rules of social security card numbers are relatively complex and vary from region to region. The following is a simple explanation using the common 18-digit social security number as an example (similar to the generation method of ID card numbers): The first 6 digits are the area code, representing the area where the insured person is located. For example, the code for some areas in Beijing is 110101. The 7th to 14th digits are the date of birth. For example, 19800101 means born on January 1, 1980. The 15th to 17th digits are the sequence code, where the 17th digit is an odd number for males and an even number for females. The 18th digit is the check code, which is calculated based on the previous 17 digits through a specific formula and is used to verify the accuracy of the number. For example: 11010119800101001X, where "110101" is the area code, "19800101" is the date of birth, "001" is the sequence code, and "X" is the check code. It should be noted that the actual generation of social security card numbers will be based on the specific regulations and requirements of local social security systems. To obtain the most accurate and detailed rules, you need to consult the local social security department.