The invention relates to a transportation simulation method for onshore wind power large product transportation. The transportation simulation method comprises the following steps that 1, an air bag simulator with the proportion and size same as that of the wind power large product equipment is designed, that is to say, the air bag simulator is designed according to the true proportion of 1:1; 2,the air bag simulator is filled with gas and fixed to the top of a vehicle, a person drives the vehicle to pass a bend, if the traffic problem is encountered, recording is conducted rapidly, and the road reconstruction scheme is judged, wherein the scheme comprises the step of widening an existing road, or cutting part of mountain blocking traffic, or removing line barriers above the road or removing power line poles and communication rods on the two sides of the road; 3, gas in an air bag of the simulator is discharged, so that the vehicle passes the bend having problems, the air bag simulator is filled up with gas rapidly and then fixed to the top of the vehicle, and the vehicle continues to move forwards till encountering the next bend with problems, by that analogy, the bends with problems are troubleshot one by one, and road survey tasks of all road sections is completed; the simulator is the air bag simulator, and the simulator is provided with a quick charge pump and a simulatorfixing frame fixed to the vehicle.