Abstract: With the basic efficiency analyzing theory and ways,multi-input,output and farmers' characteristics were investigated and analyzed from Fujian family farm samples,and the influencing factors for family farm marketing efficiency and the model were determined to establish the stochastic frontier analysis(SFA)model and function for empirical analysis.The results showed that generally the optimal scale efficiency could be obtained in small scale and super scale family farms;application of new technologies could greatly improve family farm efficiency;and the correlation degree between family farm efficiency and land area was obviously lower than those of capital costs and labor force,which indicated that the development of Fujian family farm was no longer depending on farm land extension as the traditional agriculture.