In order to establish a planing right-angle cutting force prediction model,the research necessity and the current research status were explained.Ti6Al4V alloy cutting simulation was made with AdvantEdge,and the obtained data were taken as the basis of the prediction model.The empirical formula was improved and an improved index prediction model was established.Then SPSS analysis was performed on the simulation data,and feasibility analysis and multiple regression solution were made to the model,finally the model was tested.Through comparing the fitted data with the original data through the improved index prediction model,it is found that most of the errors are within 10%,indicating that the combination of cutting parameters (feed and cutting speed) and tool parameters (rake angle) can also be used to predict the cutting force.It also paves the way for the subsequent study of the combination of cutting parameters and tool parameters.