The invention discloses an asphalt mixture mixing device which comprises at least one aggregate heater box, an asphalt heat pump and a mixture mixing device. An aggregate discharge port of the aggregate heater box and an asphalt discharge port of the asphalt heat pump are both positioned over a feeding port of the mixture mixing device. The device provided by the invention is used to realize integration of the aggregate heating and mixture mixing functions, solve inconvenience of preparing a few asphalt mixture on site or at a mixing field, can be used to reasonably mix and prepare the asphalt mixture according to the required amount of the mixture, and is economical, saving and environmentally friendly. Therefore, scattered small-area damages on the surface of an asphalt pavement at the airport are no longer dependent on large-scale repairing machinery and are not repaired by the use of materials limited in an emergent cold patch asphalt mixture. However, a hot mixed asphalt mixture is used for endurance and economic repairing, and the insulation problem of the mixture during the transportation process can be solved.