Objective: Exploring the reliability and validity of Chinese version of The Social Support Appraisal (SS-A) scale developed by Vaux et al (1986) and the characteristics of adolescent's social support.Methods:Using the scale, 515 junior and senior high school students were investigated.Results:(1) The SS-A scale had internal consistency of 0.91 for the scale and of 0.81-0.84 for three dimensions and a three-factor model was supported by the data (?2/df