The internal combustion impact tamping pick is a light and efficient tamping tool. It has the characteristics of compact structure, light weight, high efficiency, easy operation, labor saving, good shock absorption effect, etc. It is suitable for crushing and tamping operations on various road conditions. It is suitable for crushing and tamping operations of concrete, masonry, asphalt, rock, soil, etc. The equipment adopts piston buffer shock absorption and body elastic shock absorption, which has good shock absorption effect and minimizes the labor intensity during operation.