Abstract: This paper reviews the injury of salt stress caused to fruit trees and the salt tolerance of
different fruit trees. The physiological and biochemical responses of fruit trees to salt stress are discussed
from cell membrane integraty，protective enzyme system，photosynthesis and osmotic adjustment
respectively. This paper also summarizes the functional and regulatory genes involved in molecular
response to salt stress，and the future research on salt stress of fruit trees is prospected.

Key words: fruit trees, salt tolerance, physiological and biochemical responses, molecular responses