The invention relates to the field of coaches, in particular to a novel skin stretching device. The novel skin stretching device at least comprises a rectangular frame structure, wherein the rectangular frame structure is formed by two positioning shafts and two frame beams. The novel skin stretching device is characterized in that two sliding sleeves are respectively and fixedly connected with both ends of a sliding rod, and the two sliding sleeves are respectively in sliding connection with the two positioning shafts of the rectangular frame; linkage cylinders are fixedly arranged on one frame beam, and the power output ends of the linkage cylinders are fixedly connected with the sliding rod; and the sliding rod is connected with a connecting plate by bolts. Because the expansion amount of the linkage cylinders are the same, the problem of skin deformation caused by uneven stress of skin in a stretching direction is solved; the connecting plate is connected with the sliding rod together by the bolts, and both surfaces of the connecting plate can be reused for many times, so that the use rate of equipment is increased; and additionally, after the connecting plate is used to a certain degree, the connecting plate can be easily replaced.