Abstract: In order to probe the influence on inheritance and variation of crops in space flight,this paper analyzed the conditions of the later generations of pepper and tomato by satelite board and repeat board,determined the plant growing,output of vegetable,physiological,biochemical and cytological characteristic.The results showed:Space environment made vegetable seeds produced variation.Space flight will be a new way to improve vegetable pomising lines.

Key words: Space, Flight breed, Vegetable, Inheritance and variation