Abstract: According to the realization of planning,decomposition,synthesis and optimization,this paper brings forward three choice schemes for mobile 6-meter paraboloid antenna trailer on the basis of general development requirements,and detailedly analyses all possible subsystem structural schemes of antenna,pedestal,trailer,and calibration.After the balance on technology,quality,cost,and period,the optimal structural system scheme is selected,and the rationality,feasibility,economics,advancedness,and scientificalness are ensured.Practice shows the customers are satisfied with the selected scheme and the effect of implementation is desirable.