The invention discloses an auxiliary installation device for pipe monitoring equipment and an installation method for the pipe monitoring equipment. The auxiliary installation device comprises a support used for being fixed to the ground on one side of a pile hole, a cantilever arranged at the top end of the support, and multiple clamping elements connected to the outer end portion of the cantilever through a rope. The clamping elements are used for clamping a tubular part. The outer end portion of the cantilever is a ring-shaped part for forming an inner hole. The ring-shaped part is located above the pile hole when the cantilever works. The size of the inner hole of the ring-shaped part is larger than the diameter of the tubular part, and the tubular part can penetrate the inner hole of the ring-shaped part obliquely in the to-be-installed tubular part inserting direction from the bottom end of the support. By means of the auxiliary installation device for the pipe monitoring equipment and the installation method for the pipe monitoring equipment, unsafe factors caused by the situation that workers bend to conduct installation can be removed due to the adoption of the cantilever structure, and it can also be ensured that the tubular part is installed in a manner of keeping perpendicular under the effect of gravity of the tubular part.