RPE is widely used to monitor and evaluate the internal training load of tennis players due to its economical and convenient advantages.However,RPE may be disturbed by non-objective factors,which will inevitably affect the accuracy of evaluating and the next step training plan made for coaches.In actual training,there is still a lack of relevant researches on how coaches should reasonably use RPE indicators to evaluate the internal training load of athletes.In this study,24 players(12 males 12 females)of the Chinese national tennis training team were selected as the study objects.They were grouped into gender:male and female athletes.At the same time,the exercise forms were divided into two states:training and competition.The results showed that:1.The correlation between RPE and the average maximum heart rate percentage and the maximum heart rate was low in the two states of training and competition;2.In the competition state,s-rpe was significantly correlated with Banister's Trimp and Edwards's TL of all team members(P<0.05),while in the training state,the proportion of significant correlation was 50%and 41.7%respectively(P<0.05).Therefore,RPE indicators were more objective in evaluating the internal load in the competition state.3.In the training and competition state,The correlation between the RPE indicators and the heart rate indicators of female players is significantly higher than that of male players,Therefore the RPE indicators are more objective in evaluating the internal training load of female players.This study will provide reference for the objective evaluation of RPE in the field of professional tennis in China for the rational use of internal training load.