The invention discloses an environment-friendly trash bin which includes an inner cylinder, an outer cylinder, a pressure plate, a bottom plate, a pedal, a first connecting rod, a trigger and a linearactuator. The pressure plate is hinged to an edge opening of the inner cylinder, and the linear actuator drives the pressure plate to rotate. The bottom plate is located at the bottom of the inner cylinder, an elastic body is arranged between the bottom plate and the bottom of the inner cylinder, the first connecting rod is located below the inner cylinder, and one end of the first connecting rodis hinged to the bottom plate. A guide groove in the length direction of the first connecting rod is formed in the middle of the first connecting rod, the pedal is hinged to the bottom of the outer cylinder, a guide shaft is arranged in the middle of the pedal, and the guide shaft is inserted into the guide groove. The pedal drives the first connecting rod to rotate through the guide shaft and the guide groove, and the trigger is located on a rotating path of the first connecting rod. According to the environment-friendly trash bin, the linear actuator is utilized to drive the pressure plateto rotate, in the daily use, the pressure plate automatically maintains a horizontal attitude to compact trash in the trash bin, the situation that the inner space of the trash bin is occupied due totoo much expansive trash such as packing boxes is avoided, and the use efficiency of the trash bin is improved.