The invention relates to an electric cable connecting pipe, which comprises a pipe body, wherein a cavity of the pipe body is provided with a clamp, the pipe body is provided with a bending structure, the clamp is provided with cable clamping holes, and each cable clamping hole is provided with a telescopic structure. The electric cable connecting pipe has the advantage that each cable clamping hole is arranged into the telescopic structure, and the size of each cable clamping hole is adjusted according to the diameter and thickness of the cable, so the electric cable connecting pipe is suitable for cables with various specifications; and during construction, workers do not need to carry various types of cable connecting pipes, so the operation is convenient and rapid, the labor is saved, and the cost is reduced.