The invention relates to a method for preparing high- viscosity hydrochloric dry casein by taking 'qula'as raw material. It comprises following steps: sifting raw material, disintegrating, color protecting, stirring, dissloving; filtering, pumping material liquid into centrifugal machine with the rotary speed being 6500r/ min- 8000r/ min and flow quantity being 1500 l/h- 2000l/h; adding tackinessagent alumen at 30- 42 Deg. C, the addition amount is at least 0.1% of that of dry material; stirring; regulating pH with 5- 15% of hydrochloric acid to 3.8- 4.6 to deposite casein; washing depositedcasein with clean water; dewatering; granulating with granulation machine of 30- 60 order; drying granulated material at 35- 65 Deg. C in drying machine for 25- 30 minutes. The invention is characterized in that it employs tackiness agent and second- time coloring protecting process to improve product property, and the product is characterized by high viscosity, no peculiar smell and stable performance.