Shenzhen social security will take several months.

Legal analysis: According to the relevant regulations of Shenzhen, after the insured pays medical insurance, the date of 1 of the following month is enough. Old-age insurance needs to be paid for 15 years, and can only be collected after reaching the statutory retirement age.

Legal basis: Article 45 of the Measures of Shenzhen Municipality on Social Medical Insurance. After going through the insurance formalities and paying the medical insurance premium, the insured shall enjoy the medical insurance benefits stipulated in these Measures from the 1 day. Insured before the 20th of each month shall be deemed as insured in that month; After the 20th day of each month, the applicant will be insured on a monthly basis. The insured units and insured persons who stop paying medical insurance premiums shall stop enjoying the medical insurance benefits paid by the medical insurance pooling fund from the next month 1 day after the interruption of payment, but the balance of their personal accounts can continue to be used.

Go through the insurance procedures for infants registered in this city, pay the fees from the month of application, and enjoy the medical insurance benefits from the next month of payment; Within 30 days from the date of entering the household, those who apply for insurance with a copy of the baby's birth certificate and the mother's ID card can pay the fee from the month of birth and enjoy medical insurance benefits according to the relevant provisions of these measures from the date of birth. Article 10 of these Measures stipulates that students and children who go through the insurance formalities in their schools, research institutes or kindergartens shall enjoy medical insurance benefits from September of that year to August of the following year.