The invention discloses an LTE230 system and zigbee same-frequency coexistence method. A length of a superframe is defined as the length of a frame of LTE230; a position of a signal is in synchronous alignment with that of an LTE230 uplink signal; only uplink GTSs of the zigbee are allocated in a downlink time slot of the LTE230 according to an uplink and downlink interference relationship of the zigbee and the LTE230 system; an uplink time slot of the LTE230 needs to be shared with the zigbee based on time division; and when no LTE230 uplink sending is carried out, a zigbee coordinator configures CAP and uplink/downlink GTSs in the uplink time slot. According to the method, through effective utilization of the uplink and downlink time slots, the zigbee system can work in a 230UE activated state, and the air interface efficiency is high.