My father and my husband quarreled. What should I do?

First separate them for a short time, then take your husband out to play and relax, then gently enlighten him, slowly tell him something about your father, after all, he is an elder, then go back and talk about it for your own good, then go to see your husband, go back to your father, do some shopping, and cook some good dishes in the evening so that they can have a good talk. Unless the contradiction between two people is too big, or one of them is too unreasonable, it will be resolved.