Uplink power control method and device

The invention discloses an uplink power control method and device. The method includes the following steps that: based on determined strength of downlink reference signals transmitted by a service cell, and determined strength of downlink reference signals transmitted by a non-service cell, UE determines uplink interference strength according to a principle that channel frequency response has symmetry in a TD-LTE communication system; based on the determined uplink interference strength, the uplink power value of the UE can be determined according to an open loop power control algorithm; and uplink transmitting power of the UE is controlled according to the determined uplink power value. With the uplink power control method and device adopted, problems which are caused by a situation in which interference of the UE on the non-service cell is not considered when open loop power control is adopted can be solved, and accuracy of uplink power control can be improved.