Need. The reason why second-hand houses need maintenance fund invoices is to ensure the maintenance of public facilities and parts used in the community. When buying a second-hand house, the maintenance fund invoice is the proof that the owner of the house has paid the maintenance fund in accordance with the regulations. Buyers can know the maintenance funds, the use and management of maintenance funds in the community by looking at the invoices of maintenance funds, which is helpful for buyers to judge the maintenance status of the community and estimate the future maintenance costs, so as to better evaluate the value and management of the house.