This study examines the performance of the convection-permitting simulations of a local heavy rainfall occurred in Chongqing Hechuan district on June 9, 2017 which use three different PBL schemes. Compare of the gauge-satellite merged precipitation analysis and WRF simulations with different schemes shows that the MYJ and BouLac schemes give better performance than the YSU scheme. The YSU scheme produced the northernmost location bias. The simulation with MYJ scheme produced not only a better rain band location, but also better position and time of the convective initiation. The differences among the schemes are due to differences in vertical turbulent mixing strength. The winds below 1.5 km above ground level that affected by turbulent mixing strength could change the position of the southwest vortex system which is a critical meso-scale system to this heavy rainfall. Sensitivity studies based on the YSU scheme confirm the connection between the strength of turbulent mixing effect and the location of precipitation.