The invention discloses a multi-contact pressing type pipeline coating thickness measuring device. The multi-contact pressing type pipeline coating thickness measuring device comprises a mounting disc, pressing probes and an elastic spring; the mounting disc is provided with an accommodating cavity, and probe mounting holes are formed in the circumferential wall of the mounting disc; the pressingprobes are mounted in the probe mounting holes, and comprise pressing contacts arranged towards the center of the mounting disc, and sensing contacts arranged to be away from the center of the mounting disc, and the pressing contacts drive the sensing contacts to get close to or make contact with the inner wall of a pipeline when bearing external force; and the elastic spring is accommodated in the accommodating cavity of the mounting disc, the outer end of the elastic spring is fixed to the inner wall of the mounting disc, and the inner end of the elastic spring is connected with a torque input external-connecting part. By adopting spring type pressing design, when the elastic spring bears the force and the external diameter expands, the elastic spring makes contact with the pressing contacts, when the elastic spring bears opposite force and the external diameter is decreased, the elastic spring is separated from the pressing contacts, and the multi-contact pressing type pipeline coating thickness measuring device has the advantages of being simple in structure, capable of realizing multi-point simultaneous measurement and probe self-retraction protection, suitable for curvature surface measurement of the inner walls of irregular pipelines and the like.