How to change the medical insurance card run by Guangzhou unit into social security card?

You don't need to change this. Now the social security card is automatically produced by the Social Security Bureau in batches. As long as you are insured, it's your turn and the card will come out automatically! After the card comes out, it will inform your unit to collect it and then send it to you; After the social security card is activated, you will receive a text message, and then the medical insurance card will be deactivated!