The invention discloses a 
public toilet urine-collecting 
system which comprises a urinal, a 
tap water pipe and a 
sewage pipe. The 
tap water pipe is connected with a water flushing port of the urinal. The 
public toilet urine-collecting 
system further comprises a sensor, a 
urine-
sewage separator, an 
actuator, a 
urine collection device, a flushing mechanism and a 
signal source. The sensor is installed on the urinal. The urine-
sewage separator is mounted on the sewage pipe. The 
actuator is respectively in 
signal connection with the sensor and the urine-sewage separator. The 
urine collection device comprises a urine pipe, a urine storage 
barrel and a float mechanism, wherein the urine pipe is connected with the urine-sewage separator, the urine storage 
barrel is embedded under horizontal plane is connected with the urine pipe, and the float mechanism is disposed in the urine storage 
barrel. The flushing mechanism comprises another 
tap water pipe communicated with the urine storage barrel, a flushing valve, a flushing water pump and a flushing water outlet, wherein the flushing valve is disposed at a joint of the tap 
water pipe, which is connected with the urine storage barrel, the flushing water pump is disposed on the tap 
water pipe, and the flushing water outlet is arranged at the bottom of the urine storage barrel and is communicated with a sewer. The 
signal source is in signal connection of a remote 
urine collection monitoring room under triggering control of the float mechanism.