The invention discloses a vehicle self-contained refrigeration machine set, which comprises: a power system, a control system, a refrigeration system and an electrical heater set, wherein the power system is connected with the control system, the power system is used for supplying the control system with electric power and is controlled by the control system; the control system is connected with the refrigeration system and the electrical heater set, the control system collects working parameters of the refrigeration system and the states of a refrigeration box, generates a control signal after data processing and adopts the control signal to control the operations of the refrigeration system and the electrical heater set. Driven by an alternating current variable frequency motor or a direct current variable frequency motor, the machine set adopts a low-speed starting compressor, therefore the current is small when the machine set is started, and no impact on an engine system is caused, thus the allowance in selecting style of diesel engine is reduced, a generator set with smaller model is selected, and fuel consumption is reduced. In addition, by adopting an electrical heating manner to produce heat and to deforest, design of the refrigeration system is greatly simplified, and the heat producing and the deforesting are realized directly and simply.