The invention discloses an adjustable environment-friendly garbage collecting device. The adjustable environment-friendly garbage collecting device comprises a trapezoidal protective cover, a circularfeeding cover, a rotating rod, an X-shaped rotating plate, a feeding frame, an inserting plate, a protective plate, a handle, an adjustable protective cover structure, a bottom material storing discharging barrel structure, a transverse bottom plate, an adjustable movable frame structure, bottom anti-skid supporting legs, a longitudinal connecting rod and an adjustable pointing plate structure, wherein the trapezoidal protective cover is installed at the upper part of the adjustable protective cover structure. According to the adjustable environment-friendly garbage collecting device, an adjusting bolt, a fixing hole and an adjusting plug are arranged, so that the position of the adjusting bolt on an adjusting insertion pipe can be adjusted conveniently, so that the material storing capacity of a material storing barrel can be conveniently adjusted, garbage in a garbage can be prevented from falling to the outer side to influence the environment-friendly effect; and due to arrangementof a rotating baffle, a discharging hole and a height adjusting cover, a protective cover can be shielded, the rotating baffle is pulled upwards to open the protective cover when a material is required to be discharged, so that the garbage in the material storing barrel can be conveniently discharged.