The invention disclose a vehicle bicycle parking device and belongs to the technical field of bicycle parking. The vehicle bicycle parking device comprises a main support, an upper fixing supporting mechanism and a lower fixing supporting mechanism. The upper fixing supporting mechanism comprises a left side plate, a right side plate, rubber blocks and an upper rotary groove. The left side plate and the right side plate are slidably mounted on the main support. The rubble blocks used for clamping a hub and spokes of a front wheel of a bicycle are mounted on the left side plate and the right side plate. The upper rotary groove is rotationally mounted in the position, between the left side plate and the right side plate, of the lower portion of the left side plate and the lower portion of the right side plate. The rotation interval of the upper rotary groove is above the lower portion of the left side plate and the lower portion of the right side plate. The lower fixing supporting mechanism used for mounting and supporting a rear wheel of the bicycle is fixed to the lower end of the main support. The vehicle bicycle parking device has the advantages that the structure is simple, and parking and bicycle picking are more convenient.