The invention provides a combination type garbage can. The combination type garbage can comprises a garbage can shell, a garbage can inner barrel and a cover plate, wherein the garbage can shell comprises a shell body, a garbage feeding opening and a first opening are formed in the shell body, and a herringbone cover plate group is arranged at the part of the garbage feeding opening; the size of the cover plate is matched with that of the first opening, and a boss and a clamping part are arranged on the cover plate; and a second opening and a U-shaped clamp are arranged on the garbage can inner barrel. By applying the technical scheme, the integral structure is simple. By adopting the combination design of the garbage can shell and the garbage can inner barrel, the garbage can shell is always kept clean and tidy, and the garbage can inner barrel can meet garbage storing requirements, so that the practicability is strong. The design objective of the cover plate is to seal the first opening, and the clamping part arranged on the cover plate is clamped by a manipulator to take the garbage can inner barrel out of the garbage can shell and restore the garbage can inner barrel in the original position. The operation is convenient, and fixed-point placing requirements are met.