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Aiming at the problems of conveying powder feed by spiral springs and plug plates such as the clean of residue and the measurement of feed quantity, an automatic feeding conveying system consisted of weighing platform, feeding vehicle, translational orbit, overhead orbit and control system was designed. The design of feeding vehicle, orbit and parameters were determined by the relationship between the inner pigpen and the cruise time. Combined with the negative feedback control method of weighing sensor, the WiFi wireless control system was designed with Arduino control board. The system can realize automatic cruise control of feeding vehicle’s loading and unloading, automatic measurement of loading quantity by weighing platform and the joint of weighing platform and the orbits by translational orbit mechanism. The experiment was made with powdery feed at China Agricultural University Shangzhuang Experimental Station. The results indicated that the difference between the relative standard deviation of the weighing system measured value and the actual measured value was less than 1%, 〖JP3〗the maximum relative standard deviation of the system measured value was less than 2.5%, and the weighing system had a high degree of accuracy. Additionally, controlled by the system, the feeding vehicle can complete loading, cruising and unloading functions according to requirements to realize two rows of pigpen feeding. The orbital feeding system had practical application value for precise feeding in the pig house.