When buying a second-hand house, if there is no maintenance fund invoice, it means that you need to bear the future maintenance costs yourself. Before buying a house, it is recommended to conduct a whole house inspection and evaluation to understand the actual situation and potential problems of the house. You can discuss with the seller to see if you can reach an understanding, such as lowering the house price or negotiating other solutions. At the same time, the maintenance responsibilities and obligations are clearly stipulated in the purchase contract to protect their rights and interests.