Abstract: Numerical simulation and experimental verification of the mixing characteristics of combustion chamber with bilateral inlet at head were conducted in this study,the performance parameters and flow field characteristics of the mixing duct were obtained.The results show that the bilateral vortices at the head of the mixing duct is the key to ignition and flame stabilization,the total pressure recovery of the mixing duct decreases slightly under attack or yaw angle,so the combustion chamber shall allow to adjust the fuel quantity to avoid unstable working state of the inlet.It can be seen in the paper that the numerical results are consistent with the experimental results,indicating that the numerical simulation is feasible and can be used as a reference to the combustion chamber design and combustion organization.