The invention relates to the field of underground pipeline detection, and discloses an underground pipeline detection drill. The underground pipeline detection drill comprises a touch portion, at least a main stem portion, and a force applying portion. The at least a main stem portion is used to form an intermediate portion connecting the touch portion and the force applying portion. The intermediate portion is detachably fixedly connected with the touch portion and the force applying portion and forms a rod-shaped structure, and when the intermediate portion comprises two or more main stem portions, two adjacent main stem portions are detachably fixedly connected. In the above embodiment, the detection drill formed by the touch portion, the main stem portions, and the force applying portion is convenient in use and has little influence on vegetation. According to detection depth, the main stem portions in different lengths and different number can be selected to combine to form the intermediate portion, to adjust length of the detection drill. The detection drill improves adaptability. When the detection drill is not used, the detection drill can be dismounted into a plurality ofsegments, and the detection drill is convenient to carry.