Abstract: This paper introduced a novel guide vane inlet applied in the high consistency cleaner for paper industry. The grid division was finished with ICEM and the flow field of pulp of 3% in concentration was simulated with Fluent software. Different features of the pulp trajectory, pressure and velocity in guide vane cleaner model were analyzed. Results showed that internal flow field was symmetric in the guide vane cleaner, and the cleaner could run smoothly. The flow field of pulp suspension consisted of an external vortex in the outer region and an internal vortex in the central region. In the case of inlet slurry velocity was 4 m/s, the outlet flow rate of the good pulp and the slurry were 4.424 kg/s and 1.083 kg/s, respectively, and leaded to a fiber collection efficiency reached 80.54%,improving by 10% than traditional cleaners.In addition, the novel guide cane cleaner enabled the pulp to move faster than that in the traditional cleaners. This overcoming the typical drawback of short circuit flow, which resulted in a 3% improvement in separation efficiency. The obtained results could provide a theory basis for improving the efficiency of traditional high consistency cleaner.