The invention relates to an energy collection and storage method for a layered data return link in the wireless sensor network. The method comprises the following steps that the wireless sensor network is established and divided into clusters according to certain areas, nodes in each area transmit data to a cluster head, the cluster heads form a data return link, and the data is transmitted to a data collector; and one or multiple wireless energy transmission device(s) is/are arranged in the network, solar energy or wind energy is converted into electromagnetic energy, the electromagnetic energy is transmitted out via a directional antenna, and the cluster heads are provided with energy collectors to collect and store energy. According to the invention, the energy collection and storage capacity of the cluster head based data return link in the sensor network can be determined, and the total revenue, which is obtained by subtracting energy transmission cost consumed to collect energy of the cluster head nodes and energy storage loss from the total data return revenue, of the system is maximized.