I got married 3 years back . But things are not going well..actually my hubby is not good with my parents . He started making fun of them showing them down in front of others. Always try that I cannot meet with my parents. Life is just like hell...what to do

Talk to him and ask him why does he behave that way with your parents. If you will pass off his behaviour or will ignore it to make peace at home, he will take it as a causal thing and will continue with his behaviour. He will always behave disrespectfully with them. I think you should discuss his behaviour and tell him how bad you feel about it.