The invention relates to a power allocation method for improving the user experience quality, which is used for the radio transmission technical field. In the invention, a source user firstly sends a collaboration request to collaboration user candidates on the periphery; then the collaboration user candidates who receive the request compare according to the following sequence to determine whether the collaboration user candidates can become collaboration users; the dump energy value and a dump energy threshold are compared, the quality of a channel is good, and energy consumed and the energythreshold consumed are compared. If the collaboration user candidates are selected as the collaboration users, collaboration confirmation is sent to the source user; then the source user sends power distribution information to the users on the periphery according to the total number of the collaboration confirmation received; and finally, after receiving the information, the collaboration users assist to forward data according to the distributed power value. The invention can improve the experience quality of the collaboration user in the collaboration communication, thereby ensuring that thecollaboration user has enough dump energy to satisfy the communication demands thereof. The invention is applicable to B3G / 4G communication systems.