Real estate industry is a capital intensive industry and mostly need to finance financial institutions. Financial institutions must obey the related specifications of The Banking Law Article 72-2 when finance land & construction financing. They also should be familiar with the government policies、construction backgrounds、credit and finance、locations and products meet the market demands. The research uses a financing case study of the P Bank. To explore once the constructor faced financial difficulties and the construction shutdowns, the financing bank and trust unit served roles of a go-between. They together with other all interested parties used the function of real estate development trust to let the construction continued. Then the construction completed and finished delivery, finally the bank recover claim successfully.