The invention relates to a turning vehicle plate based on mechanical parking equipment. The turning vehicle plate comprises a parking layer. The parking layer is provided with vehicle carrying plates arranged in parallel. One side of the turning vehicle plate is provided with a track. A travelling mechanism is arranged under the vehicle carrying plate. The travelling mechanism is cooperated with the track. The vehicle carrying plate can be moved out from the parking layer through the travelling mechanism, and make a 90 DEG turn. The turning vehicle plate is advantaged in that when the vehicle carrying plate is longitudinally moved out of a garage, outer side wheels and inner side wheels are on ground, and a steel wheel is suspended, side edges on two sides of the steel wheel have effect of limiting the vehicle carrying plate from moving horizontally, when the tail of the vehicle carrying plate is out of the garage, the steel wheel presses a turning segment of the track, and the inner side wheels are suspended, and outer side wheels still keep a landing state, so that the outer side wheels and the steel wheel together support the vehicle carrying plate. According to a mechanical principle, under the condition that the radius of the steel wheel is smaller than the radius of the outer side wheel, and rotating speed is consistent, edge linear velocity of the outer side wheel is larger than edge linear velocity of the steel wheel, so that the vehicle carrying plate automatically makes a turn. The turning vehicle plate is high in reliability and stable in operation.