My girlfriend's mother is a very picky person. What should I do?

Because you are a mother-in-law, you should try to endure it. In fact, as long as you are sincere, the old man should not be unreasonable, so it should be better for her to see your sincerity. It's best not to do things that contradict her and annoy her. If there is a conflict with the other parent, it will greatly affect your relationship. If your girlfriend loses her temper and ignores you, you should apologize, or you will be scolded for breaking up. Moreover, in fact, the son-in-law should be the regulator of his daughter's mother, and he is a good son-in-law. When your girlfriend is in conflict with your parents or your parents, you should not protect your girlfriend or add fuel to the fire. You should rationally adjust their relationship.

Besides, don't contradict him. His parents are still complacent, arrogant and self-righteous.