The utility model discloses an utilize sour malodorous device of rubbish of detaching of phosphorus molybdenum, including the sour spray tank that mixes of gas collecting channel, air pipe, purified reaction ware and phosphorus molybdenum, its characterized in that: the gas collecting channel passes through air pipe and purified reaction ware intercommunication, air pipe's inside is equipped with axial fan, the upper end of purified reaction ware is equipped with the tail gas gas vent, the getter device passes through the tubule and is connected with gaseous detecting instrument, the sour spray tank that mixes of phosphorus molybdenum passes through transfer line and thick liquid pump intercommunication, the thick liquid pump passes through transfer line and nozzle intercommunication, back flow and the sour spray tank intercommunication that mixes of phosphorus molybdenum are passed through to the bottom of purified reaction ware. The utility model discloses a spray the stench of detaching in the rubbish with the sour liquid that mixes of the sour phosphorus molybdenum who gives first place to of phosphorus molybdenum, then the composition that passing through gases detecting instrument can tracer gas and gas strength etc. The conversion and the transmission of passing through gases detecting instrument's signal make corresponding processing for this information transfer the computer of external connection.