The recent development of researches on combustion characteristics of boron-based fuel-rich propellants has been reviewed. The paper summarizes the technical means of adjusting the primary and secondary combustion performance, which include the coating of boron, the adjustment of the formula of propellant, the improvement of the gas nozzle, the quantitative change of air and gas，the appropriate selection of spray regime, the optimization of air inlet mode and the distance between two air inlet, and so on. These efficient measures improve the combustion efficiency of boron-based propellants and reduce the ignition residue.