The purpose of the current study was to investigate the relationships between leisure constraint and leisure constraint negotiation in leisure sports participants based on the leisure constraint reduction theory, and to examine the difference in their relationships based on the types of leisure sports. A total of 330 respondents who participate in leisure sport activities in Seoul and Kyonggi province were selected using the purposive sampling method, in turn 286 data set was employed for the analyses. Using SPSS 18.0, frequency analysis, reliability analysis, factor analysis, correlation analysis, and multiple regression analysis were conducted and the findings are as follows: First, leisure constraint negotiation significantly affects leisure constraints. Specifically, controlling intensity of an activity out of leisure constraint negotiation strategies had a negative effect on negative perception and risk of injury; and changing interpersonal relations strategy had a negative influence on lack of time and insufficient condition constraints. However, improvement of condition strategy had a positive effect on lack of time and risk of injury. Second, only in individual leisure sports, leisure constraint negotiation had a significant effect on leisure constraints. Specifically, skill acquisition had a negative effect on facility and environment, and changing interpersonal relations strategy had a negative effect on lack of time. Whereas, improvement of condition strategy had a positive influence on facility and environment and lack of time.