Can I still use the social security card after 2 years of suspension? Please help me. thank you

Generally, it is ok, because this is a real-name registration system, but the two years that have stopped will not count as your payment period. You can consult the local social security department to determine whether you can make up the payment. If so, it's better for you. Mind you, you can't get a pension until you have paid social security for 15 years. If it is less than 15 years, you can only get back what you paid when you retire.