The invention discloses a pipeline creeping robot. The pipeline creeping robot comprises a box body, a control mechanism, a detection mechanism, a fixing column, multiple obstacle crossing creeping mechanisms, an extending-and-contracting connecting rod device and two detection fixing support brackets. The detection mechanism is mounted on the front end of the box body. The two detection fixing support brackets are mounted on the two sides of the box body correspondingly. The control mechanism is mounted inside the box body. The fixing column is mounted on the back end of the box body. The multiple obstacle crossing creeping mechanisms are connected with the fixing column through the extending-and-contracting connecting rod device. The detection mechanism, the obstacle crossing creeping mechanisms and the detection fixing support brackets are electrically connected with the control mechanism. The pipeline creeping robot is applicable to the size variation of the pipeline; barriers in the pipeline can be crossed; obstacle crossing ability is great; the problem that barrier obstruction is conducted in the pipeline walking process is avoided.