The utility model discloses a deep-hole high-pressure hand-operated rotary spraying device, and solves the problems of low construction efficiency, high labor intensity, and serious waste of materials and manpower. The deep-hole high-pressure hand-operated rotary spraying device comprises a plurality of segments of steel tubes, wherein two adjacent steel tubes are connected through inner threaded casing pipes, an outer wall of a rear end of the steel tube is provided with threads connected with a high-pressure grouting pipe, a front end of the steel tube is connected with a reducing steel tube with a diameter thereof reducing outwards, a jet nozzle is fixed on a front end of the reducing steel tube, a connecting steel plate fixed on the steel tube penetrates a middle part of the steel tube, and the connecting steel plate is connected with a hand-operated crank through bolts. According to the deep-hole high-pressure hand-operated rotary spraying device, reinforcement quality of poor-occlusion positions of jet grouting piles is ensured, so as to enabling smooth proceeding of tunnel excavation; machine parts needed is easy to purchase, simple to process, low in cost, and reusable; the device has the characteristics of being simple in structure, simple to operate, and easy to master; and by using the device, work efficiency is greatly raised and construction costs are reduced.