Abstract: Furrower is an important part that affects performance of seeder.Double disc furrower has good performance in a wide range of operation，but double disc furrower has higher requirements on accuracy of disc shaft angle，which is difficult to be guaranteed by traditional processing technology.In order to solve this problem，an optimized processing technology of double disc furrower was proposed.Optimized processing technology could improve production efficiency and product quality of double disc furrower.