Abstract: Aiming at the disadvantages of dry coal cleaning laboratory equipment of air dense-medium(fluidized) bed in lab process,the paper put forward a design scheme of on-line monitoring laboratory equipment of(fluidized) bed,introduced the structure,working principle,on-line monitoring principle and(method) of the(fluidized) bed,expounded design of hardware and software of online monitoring laboratory equipment emphatically.The laboratory equipment realized automatic measurement parameters in(preparation) process and display,processing and transmiting of the measurement parameters,which offered a scientific experiment research means for dry coal cleaning of air dense-medium fluidized bed.