The invention discloses a trash burning treatment device. The trash burning treatment device comprises an outer shell, an inner shell, a box, a first separating plate, a second separating plate, a blow-off pipe, a first movement plate, a second movement plate, a first power unit, a second power unit and a connecting pipe; the inner shell is arranged on the inner side of the outer shell, and a burning cavity is arranged inside the inner shell; the box is arranged on the outer shell, a cavity is formed in the box, a feeding opening is formed in the top wall of the box, and a discharging opening is formed in the bottom wall of the box and communicated with the burning cavity; the first separating plate and the second separating plate are both arranged in the cavity and sequentially divide the cavity into a first containing cavity, a second containing cavity and a third containing cavity; the first containing cavity is communicated with the third containing cavity, and the feeding opening and the discharging opening are both communicated with the second containing cavity; a blow-off opening is formed in the first separating plate; and the first end of the blow-off pipe is arranged on the outer side of the box, and the second end of the blow-off pipe penetrates the box to be connected with the blow-off opening. The trash burning treatment device is good in trash treatment effect and waste gas treatment effect.