Abstract: In view of the current situation that domestic small and medium-sized farmers lack a centralized feed supply system when feeding multiple breeding ponds,a centralized feed supply system was designed.The system consisted of a feed supply system,a feed fan conveying system,a feed centralized supply and distribution system,a feed throwing system,and an automatic integrated control system.By using PWM technology to control motor speed to change feed supply,using rotary distributor to realize feed supply in different ponds,using frequency converter to control feed throwing range and other technologies,the system could meet the needs of farmers for feeding in multiple ponds,and help small and medium-sized farmers to improve breeding efficiency and reduce costs,which had certain application value.