Disclosed are a field effect transistor and method for manufacturing the same, and a display device. The field effect transistor includes: a source and a drain which are spaced apart from each other; a semi-conductor layer arranged between the source and the drain; a first gate layer located on a side of the semi-conductor layer; and a second gate layer located on the other side of the semi-conductor layer. The field effect transistor provided by the present disclosure is less energy-consuming; a method for manufacturing the same is low costing; and a display device using the same is also less energy-consuming.