Do not argue in front of your children
If you really want to hide your marital conflicts from your children, then the most important thing is to avoid in front of your children. For this, you should have a talk with your spouse and explain to her the reason behind this. If due to any reason, the situation is escalating and the argument is about to begin, you must move away from the place. This ways, it will help both you and your spouse to take control over their anger and think of the alternatives that could have been chosen to solve the situation.
Use a signal
You should have a sitting with your spouse and decide a signal to stop arguing on the conflict. Both of you should remember and plan to use the signal whenever required. Remember that the signal will play a key role in alerting the other person that your kid is watching so both should stop now. If any of you see the kid moving towards the place of your argument, he should use the signal to notify the other person.
Use your room for argument
Using the living room or dining area is no place for an argument. It is strongly advised that if you want to discuss any important issue, you must not do it openly but use your room for this purpose. Before starting the discussion, you must close the door and talk in a gentle voice. There is no harm in argument provided that it is done in a proper and sophisticated manner.
Resolve the issue
Leaving the issue unattended may help you for the time being but the issue is certainly going to be raised in future. Therefore, you must sit down with your spouse and try to solve the issue as soon as possible.