The utility model belongs to toys for children, in particular to a block toy vehicle. The technical proposal of the utility model is that the block toy vehicle comprises a vehicle body and vehicle wheels on two sides of the vehicle body, wherein the top surface of the vehicle body is a plane, the top surface of the vehicle body at every vehicle wheel is respectively provided with an upright post, one portion which is nested on the bottom surface of a block of the upright post contacts with the vehicle wheels. The top surface on the front portion of the vehicle body is processed to be a step surface which is downwards depressed, the step surface is provided with a vertical round hole, and the bottom surface of the rear portion is processed to be a step surface which is upwards depressed, the bottom surface of the step surface is provided with a vertical stub axle, the outer diameter of the stub axle is smaller than the inner diameter of the round hole, and the step surface on the front portion and the step surface on the rear portion are justly concavely and convexly engaged. The block toy vehicle has the advantages that blocks are driven by the vehicle wheels to rotate, colors or patterns of the lateral walls of the blocks are continuously changed, playing interests of children are improved, and the blocks can be combined and overlapped according to the colors or the patterns to improve the cognitive ability of children. The block toy vehicle has simple structure, low manufacturing cost and convenient operation, which only needs to pull a toy vehicle.