The main objective of this research is to investigate in the relationship among basketball players' serious leisure characteristics, leisure motivation, leisure constraints, and leisure satisfaction. The research shows motivation will influence serious leisure characteristics and leisure constaints in a directive way. Leisure costraints will influence serious leisure characteristics and leisure satisfaction reversely. Serious leisure characteristics will influence leisure satisfaction directly. Path analysis indicates leisure motivation, leisure constrain, and serious leisure characteristic influence leisure satisfaction in either a direct or indirect way. Serious leisure characteristic plays not only a completely intervening variable between participating motivation and leisure satisfaction but also a partially intervening variable between leisure constraint and leisure satisfaction.