The invention discloses a mobile microgrid system including an AC high voltage part, an AC low voltage part and a DC part. The AC high voltage part includes a high voltage interface, a transformer high-voltage switch and a transformer. The AC low voltage part includes a transformer low voltage switch, an AC bus, a plug-and-play AC interface-side low voltage AC switch, different-type distributed resource plug-and-play AC interfaces and an AC/DC module. The DC part includes an AC/DC module DC-side DC switch, a DC bus, a plug-and-play DC interface-side DC switch, an intra-system energy storage system and different-type distributed resource plug-and-play DC interfaces. According to the invention, the microgrid system is constructed when a main grid gets damaged, so that local area power supply is realized and small area power balance and energy optimization are achieved. At the same time, high electric power customized demands of users for absorption of distributive resource, uninterrupted power supply and reactive and electric power mass compensation and the like are met.