The utility model provides a cement concrete pavement surface water film thickness single-point monitoring device, which comprises a base, a reinforcing rod, a positioning rod and water film thicknessmeasuring equipment, and is characterized in that a connecting hole is formed in the base; the reinforcing rod is fixedly connected to the outer wall of the base; the positioning rod is fixedly connected to the bottom surface of the base; the water film thickness measuring equipment comprises a shell and an optical fiber cable, the lower end of the shell is in threaded connection with the connecting hole, a filter cavity is formed in the upper end, permeable stone is arranged in the filter cavity, and a water inlet is formed in the upper end of the filter cavity; a pressure-sensitive sensor used for measuring water pressure in the filter cavity is further arranged in the shell, one end of the optical fiber cable is connected with the pressure-sensitive sensor, and the other end of the optical fiber cable is led out of the connecting hole. The cement concrete pavement water film thickness monitoring device is simple in structural form, tightly fixed with the pavement, free of FOD risk,standard in strength and free of power supply, and can be used for accurately monitoring the water film thickness condition of the surface of the cement concrete pavement in real time.