Abstract: The membrane tank is that one kind of liquid propellant of space system is broad used. In course of the development of the membrane tank, via the status analysis is heated. The electron beam welding norm parameter chose in the optimization. The particular soldering technology means is adopted. The being heated temperature that rubber membrane is controlled in course of the welding. The measuring by means of practice, the peak value of temperature and stay time of high temperature that rubber membrane is fulfilled the demand of the rubber membrane material in course of the welding.