Abstract: The whole fruit of fresh BlackBerry was studied in this paper.The high efficient shearing technology was applied to the ultra-fine pulping, then the thick pulp beverage of BlackBerry with pure natural and without additives was developed.The Particle Size Analyzer was used to analyze the particle size of the thick pulp, then the stability was observed, meanwhile the viscosity of the thick pulp was measured at last.The influence of the mainly process parameters on the quality of the thick pulp was studied through the experiment of single factor. The experiment showed that the static blade number of the shearing mill impacted most on the thick pulp's particle size, stability and viscosity, next was the rotor speed, the last was the number of grinding cycles. When the rotor speed was 8500r / min, the number of the static blade was 216 and the grinding cycled 4 times, with that the thick pulp had the best quality and met the needs of practical application.The obtained product tasted smoothly and exquisitely, also with fine stability and moderate viscosity.