Since ancient times, the relationship between mother-in-law and daughter-in-law is as a girl, one of the most difficult to deal with the relationship, no two. And between the wife and mother-in-law play the most critical role is also as a husband, as a son.
When the wife and parents do not get along, your first step to do is to figure out the reason for the disagreement.
Everything has a specific reason why it happened, and it can only be cured after understanding it. If your wife and your parents don't get along, you can go and ask your wife why or ask your parents in person. Of course, this is extremely unwise choice, I suggest that you should go to ask his wife usually play very well with her girlfriends or friends. In fact, when a girl is troubled, the first thing she does is to talk to her girlfriends about her troubles. So you can understand from a third party what is really happening. About that aspect of your parents, you can ask your own three aunts and uncles, because they will often talk to their own father or mother, or to put it plainly, they are really well-informed sometimes.
The second step, after understanding the cause, is of course to treat the symptoms.
If the discord is just due to some misunderstanding, this is the time to create an opportunity to solve the problem while sitting down for dinner or tea. This is the time when you should become a little flexible and ease the relationship between the two parties. If the discord in the relationship is due to a mistake on the part of the parents, you should counsel one side to the other, and on the part of the parents, you should point out what they are doing wrong. But this time to remember, parents when our elders, even if they do wrong, should not be unforgiving, with a more euphemistic way to persuade.
For their wives on the one hand, you need to coax, in fact, the girl is the best coaxing, you are her husband, your sweet words will be enough. Then sensible to tell her actually really is their parents did wrong, and then again because they are elders, do not be too much, and then let her understand that they will always be on her side.