The invention relates to the technical field of thoracoscopes, in particular to a superfine thoracoscope, which comprises a thoracoscope body, the thoracoscope body is sleeved with a sleeve, and a blunt puncture needle is embedded in the end of the thoracoscope body. A biopsy suction hole channel is formed in the endoscope body, two symmetrical glass fiber light source beams are further embedded in the endoscope body, and an image collecting hole is further formed in one side of the biopsy suction hole channel. According to the superfine thoracoscope, the blunt puncture needle with the sleevepenetrates into the thoracic cavity, intercostal blood vessels and nerves are not prone to being damaged, and the risk of bleeding is avoided; meanwhile, the mirror bodies with two radians are arranged, so that the thoracic wall focus and biopsy are convenient to observe, and far and near focuses are convenient to detect; in addition, compared with a channel formed by traditional puncture, a puncture channel formed by the arrangement is small in damage, suture is not needed after operation, the compliance of a patient is improved, and the problem that an existing thoracoscope for the internalmedicine department is prone to causing obvious trauma and bleeding risks is solved.