The invention belongs to the technical field of power machine, and in particular relates to a starting system of a motor type free piston internal combustion power generation device. The invention provides two types. The first type comprises a first free piston internal combustion engine, a second free piston internal combustion engine, a connecting rod and a linear motor, wherein the first free piston internal combustion engine, the linear motor and the second free piston internal combustion engine are sequentially connected with one another, and the whole mechanism is eudipleural. The second type is provided with a first starting coil and a second starting coil. Three starting schemes are provided according to two system structures. The first starting scheme is simple and is easy to control, and an extra linear motor mode conversion circuit is not needed; the number of parts in the second starting scheme is small, so that the starting time is short; and according to the third starting scheme, the linear motor with relatively small peak value can be matched, and the size of the whole device can be reduced. A simulation and experiment result shows that the free piston internal combustion power generation device can be quickly started within one second.