The invention discloses a multi-antenna communication network circulating energy collection method with minimal energy consumption. The method comprises the following steps: a first step of network initialization, a second step of network initial energy collection and information transmission, a third step of optimal distribution of network time and a fourth step of a network transmission phase. The beneficial effects of the multi-antenna communication network circulating energy collection method are that an aim of energy consumption minimization is set while conditions required for information transmission are ensured, a solution for allocating time for information transmission among user nodes and energy collection of a network is effectively optimized, and an aim of improving network user node energy collection efficiency and energy utilization can be attained.