A series of model tests on friction piles in corrosive foundation model were conducted to investigate the settlement characteristics of friction piles (end-bearing friction pile and friction pile) under working load in corrosive foundation. The copper sulfate solution as the corrosive medium was adopted to make the foundation model, which could accelerate surface deterioration speed. Then the settlement law of friction piles with surface deterioration under working load was investigated. The results indicated that the deterioration degree around pile surface increases with time, and the settlements increase with the deterioration degree. The load-settlement curves of end-bearing friction pile and friction pile were different. After 17 360 minutes under working load, the percentage of settlement on end-bearing friction pile reaches 28.5% of pile diameter. The settlement caused by skin deterioration is 10.6% which is larger than the settlement of friction pile with 7%. By the end of the test, the settlements of two types of piles reach the settlements corresponding to the ultimate bearing capacities respectively. Surface deterioration can cause significant incensement of friction pile settlement. This may affect the pile normal function.