The invention discloses a novel automatic micro plate detection plate washer. The novel automatic micro plate detection plate washer comprises a pump, a plate washing apparatus, a control apparatus, an enzyme label plate pallet, a program card and a washing head system, wherein the pump is arranged at the tail end of the whole body, the two sides of the pump are respectively provided with a washing lotion bottle and a waste liquid bottle, the plate washing apparatus is connected with the washing solution bottle, the waste liquid bottle and the pump through a guide pipe, the enzyme label plate pallet is arranged at the front end of the whole body, one side of the enzyme label plate pallet is provided with a micro plate detection sensor, the micro plate detection sensor is electrically connected with the control apparatus through a lead wire, the program card is inserted into a bayonet at one side at the front end of the body, the washing head system is arranged above the enzyme label plate pallet, and a Pinch valve is arranged below the washing head system. According to the invention, whether there is a micro plate on the enzyme label plate pallet is detected in real time through arrangement of the micro plate detection sensor, the micro plate sensor transduces signals to the control apparatus, and the control apparatus responds, such that ineffective plate washing can be avoided, and the detection experiment efficiency is improved.