The invention provides an optimal charging strategy of a mobile receiving wireless sensor network and an establishing system thereof. The optimal charging strategy of the mobile receiving wireless sensor network comprises the steps of uniformly dividing the mobile receiving wireless sensor network into at least two sub-areas; acquiring position information and initial energy information of a nodein each sub-area; solving the optimal driving speed, which enables charging efficiency to be maximum, of a wireless charging trolley in the sub-area according to the position information and initial energy information of the node in the sub-area of the wireless sensor network, a node energy consumption model and a node energy charging module; and determining the optical charging strategy of the wireless sensor network according to the optimal driving speed of the wireless charging trolley in each sub-area. According to the technical scheme provided by the invention, the wireless charging trolley charges the mobile receiving wireless sensor network according to the optimal charging strategy, and the charging stability and charging efficiency are improved.