To meet the requirements of satellite components, the BA204 epoxy resin which can be cured by aromatic amine was studied. The mechanical properties of M40J/ BA204 composite which manufactured by winding without solvent and winding with solvent were studied. Vacuum outgassing of M40J/ BA204 composites were studied, and properties of M40J/ BA204 composite tube in simulated space environment where the temperature changed alternately were also studied. Results show that the composites prepared by the above two methods could both meet the requirements of satellite components. The mechanical properties of composites manufactured by winding without solvent were better than winding with solvent. The total mass loss(TML) of M40J/ BA204 composite which manufactured by winding without solvent is 0. 23% and the collected volatile condensed material( CVCM) is 0. 009%. The mechanical property of pipe composite is almost constant after 200 times of thermo-cycling, which indicates the M40J/ BA204 composite has good thermal stability.