ECRS, the abbreviation for eliminate, combine, rearrange and simplify, is important and widespreadly applied in industrial engineering. Aiming at the present test situation of optical payload on space launch site, the relationship between tasks in test procedure was analyzed based on the results of earlier missions. ECRS analytical method was used for optimizing test procedure, shortening the period of test launch, enhancing the comprehensive test launch capability and ensuring reliability and safety. Finally, the trend in optimization of test procedure on space launch site was predicted.