Hydraulic borehole mining has been researched and used abroad due to the advantages of high safety factor, engineering benefit and good ecological environment protection. Some related research institutes in China are also carrying out this research. On the basis of analyzing the hydraulic borehole mining equipment in foreign countries, pawl telescopic mining equipment with independent intellectual property rights is developed. In order to increase the single hole mining volume and reduce the mining cost of this mining equipment, not only mechanical telescopic gun, but also pawl mechanism are innovatively used to secure the protrusion angle of the water gun to expand the area of hydraulic mining seam. The preliminary field experiments show that this pawl telescopic mining equipment has reasonable structure design with high work reliability, the expected target is achieved by the effectively mining.