A new quick pipe coupling, comprising: a joint body, an outer shell (6, 7), an outer ring gear, an inner ring gear and an inner ring gear bushing, wherein the joint body as a whole is a hollow tubular structure, a lower part of the joint body is provided with a spiral interface, a middle part of the joint body is provided with a connecting part connected to the outer shell, an upper part of the joint body is a tubular structure for sleeving into a pipe, and an outer wall of the joint body is provided with a plurality of sealing ring grooves and an inner ring gear groove an upper part of the inner ring gear groove is oblique; the outer shell (6, 7) is formed by splicing an upper outer shell and a lower outer shell at upper and lower positions, the lower outer shell is a transparent tubular structure and a lower part of the lower outer shell is connected to the joint body, the outer shell is a circular sleeve with an upper part in a frustum shape and an oblique cross section at an inner side of an upper part of the outer shell; the outer ring gear is arranged inside the outer shell and abuts against the outer shell, an outer side of the upper part of the outer ring gear is provided with an outer ring gear bevel matched with the upper part of the outer shell in the frustum shape; a lower part of the outer ring gear is provided with a window hole, and an inner wall of the outer ring gear is provided with anti-skid teeth and the anti-skid teeth are oblique downward, the inner ring gear is arranged inside the inner ring gear groove, the inner ring gear consists of two identical semicircular parts, an inner side of an upper part of the inner ring gear is provided with an inner ring gear bevel matched with the oblique upper part of the inner ring gear groove, and the inner ring gear bushing is arranged below the inner ring gear; the inner ring gear bushing consists of two identical semicircular parts, and the inner ring gear bushing is respectively connected to a lower part of the inner ring gear and a lower part of the outer ring gear in a snap-fit manner and moves up and down together with the lower part of the inner ring gear and the lower part of the outer ring gear, an outer wall of the inner ring gear is provided with anti-skid teeth and the anti-skid teeth are oblique downward; sealing rings are arranged inside the sealing ring grooves. a joint body, an outer shell (6, 7), an outer ring gear, an inner ring gear and an inner ring gear bushing, wherein the joint body as a whole is a hollow tubular structure, a lower part of the joint body is provided with a spiral interface, a middle part of the joint body is provided with a connecting part connected to the outer shell, an upper part of the joint body is a tubular structure for sleeving into a pipe, and an outer wall of the joint body is provided with a plurality of sealing ring grooves and an inner ring gear groove an upper part of the inner ring gear groove is oblique; the outer shell (6, 7) is formed by splicing an upper outer shell and a lower outer shell at upper and lower positions, the lower outer shell is a transparent tubular structure and a lower part of the lower outer shell is connected to the joint body, the outer shell is a circular sleeve with an upper part in a frustum shape and an oblique cross section at an inner side of an upper part of the outer shell; the outer ring gear is arranged inside the outer shell and abuts against the outer shell, an outer side of the upper part of the outer ring gear is provided with an outer ring gear bevel matched with the upper part of the outer shell in the frustum shape; a lower part of the outer ring gear is provided with a window hole, and an inner wall of the outer ring gear is provided with anti-skid teeth and the anti-skid teeth are oblique downward, the inner ring gear is arranged inside the inner ring gear groove, the inner ring gear consists of two identical semicircular parts, an inner side of an upper part of the inner ring gear is provided with an inner ring gear bevel matched with the oblique upper part of the inner ring gear groove, and the inner ring gear bushing is arranged below the inner ring gear; the inner ring gear bushing consists of two identical semicircular parts, and the inner ring gear bushing is respectively connected to a lower part of the inner ring gear and a lower part of the outer ring gear in a snap-fit manner and moves up and down together with the lower part of the inner ring gear and the lower part of the outer ring gear, an outer wall of the inner ring gear is provided with anti-skid teeth and the anti-skid teeth are oblique downward; sealing rings are arranged inside the sealing ring grooves.