The stainless steel roller type fruit detector is suitable for the selection of round fruits and vegetables. The machine consists of a frame, a closed conveyor chain with rollers installed in the middle, a drive reduction motor, a chain drive device, a bearing device, a main drive shaft, a slave drive shaft, a chain track, a roller track, etc. Jingjiang Weineng machinery the main materials of the equipment are made of stainless steel, the roller is stainless steel mirror tube, the track is food plastic and rubber, all in line with the food hygiene standards. When working, the reduction motor drives the driving shaft to run through the chain drive device, so as to drive the conveying chain wheel, conveying chain and roller installed on the driving shaft to run, and the fruit moves from the driving shaft end to the driven roller end on the roller. At the same time, the roller moves on the frame under the action of self weight and rail friction. In this way, the raw materials can be rolled 360 ° on the roller, and the staff standing on both sides can observe the fruits and vegetables, and detect the unqualified fruits.