The present study used a sample of 2404 Beijing residents and examined the characteristics of prosocial behaviors and its related factors. Results found that：（1）the prosocial behaviors among Beijing residents has a medium level；（2）the levels of dimensions of prosocial behaviors were altruism，emotionality，openness，anonymity，compliance and urgency from low to high；（3）there were age，educational level，monthly income，and subjective socioeconomic status differences in prosocial behaviors；（4）prosocial behaviors was significantly and positively correlated with life satisfaction，subjective well-being，job satisfaction and the sense of social responsibility.