A transmit power control method performed by a wireless device, the method comprising: • obtaining path losses between a to-be-adjusted wireless device and each of multiple wireless devices (step 202); characterized in that the method further comprises: • determining a neighbor path loss according to: o checking, each path loss, according to an ascending order of path losses until a stop condition is satisfied, wherein the stop condition is that a quantity of elements in a neighbor path loss set is two or more and a difference between a to-be-checked path loss and an unchecked lowest path loss is greater than a first threshold, o if the stop condition is not satisfied, adding the to-be-checked path loss into the neighbor path loss set, o if the stop condition is satisfied, stop checking a next path loss of the path losses of the ascending order of said path losses, thereby arriving at the neighbor path loss set including the to-be-checked path losses, o determining the neighbor path loss as a function of the neighbor path loss set; • adjusting a transmit power of the to-be-adjusted wireless device according to the neighbor path loss and a target power, wherein the transmit power of the to-be-adjusted wireless device is, after an attenuation according to the neighbor path loss, the target power (step 204). • obtaining path losses between a to-be-adjusted wireless device and each of multiple wireless devices (step 202); • determining a neighbor path loss according to: o checking, each path loss, according to an ascending order of path losses until a stop condition is satisfied, wherein the stop condition is that a quantity of elements in a neighbor path loss set is two or more and a difference between a to-be-checked path loss and an unchecked lowest path loss is greater than a first threshold, o if the stop condition is not satisfied, adding the to-be-checked path loss into the neighbor path loss set, o if the stop condition is satisfied, stop checking a next path loss of the path losses of the ascending order of said path losses, thereby arriving at the neighbor path loss set including the to-be-checked path losses, o determining the neighbor path loss as a function of the neighbor path loss set; o checking, each path loss, according to an ascending order of path losses until a stop condition is satisfied, wherein the stop condition is that a quantity of elements in a neighbor path loss set is two or more and a difference between a to-be-checked path loss and an unchecked lowest path loss is greater than a first threshold, o if the stop condition is not satisfied, adding the to-be-checked path loss into the neighbor path loss set, o if the stop condition is satisfied, stop checking a next path loss of the path losses of the ascending order of said path losses, thereby arriving at the neighbor path loss set including the to-be-checked path losses, o determining the neighbor path loss as a function of the neighbor path loss set; • adjusting a transmit power of the to-be-adjusted wireless device according to the neighbor path loss and a target power, wherein the transmit power of the to-be-adjusted wireless device is, after an attenuation according to the neighbor path loss, the target power (step 204).