If alimony is not enough, you can sue. If parents fail to perform their obligations of upbringing, minor children or adult children who cannot live independently have the right to require their parents to pay maintenance fees. The number of expenses to be borne and the length of the time limit shall be agreed by both parties; If the agreement fails, the people's court shall make a judgment. If the economic situation is quite difficult due to long-term illness or incapacity, he may request a reduction of benefits If one party refuses to pay, the other party may apply to the court for compulsory execution, and other units or individuals concerned shall assist in the execution.
 Legal basis
 Article 1067 of the Civil Code of the People's Republic of China [Parental support obligations and children's support obligations] If parents fail to perform their support obligations, minor children or adult children who cannot live independently have the right to require their parents to pay maintenance fees.
 Adult children who fail to perform their obligations of support, parents who lack the ability to work or who are in difficulty in life, have the right to demand that adult children pay alimony. Drowning, abandoning and other acts of injuring or injuring infants are prohibited.