Divorce laws and regulations vary significantly depending on the country and state/province in which you reside. However, it's important to note that a husband generally cannot unilaterally divorce his wife just because she visits her parents' house.
Marriage is a legal contract, and the grounds for divorce typically involve more serious issues like incompatibility, abuse, infidelity, or other legally recognized reasons depending on the jurisdiction. Threatening divorce merely based on a spouse visiting their parents would likely not hold up as a valid reason for divorce in most places.
If you are facing difficulties in your marriage, it's essential to communicate openly and honestly with your husband about your feelings and concerns. If the situation doesn't improve, seeking professional advice, such as marriage counseling or legal counsel, may be beneficial to explore your options and ensure your rights are protected.
Remember, every situation is unique, and if you're facing marital issues, it's best to consult with a legal professional in your jurisdiction who can provide personalized advice based on the specific laws and regulations that apply to your case.