Abstract: Due to the low efficiency of collecting heat and the low dehydration rate of conventional solar forage drying equipments, a new type of solar heating system for drying pasture was designed. The design was mainly composed of worm gear and worm, electromagnetic valve, spring, armature, electromagnet, gear, working medium pipeline, photosensitive element, etc. The system could keep the sun shine the collector all the time and enhance the solar radiation intensity of the collector area in the solar collector, then increase the efficiency of the solar collector and the temperature of medium, reduced the drying time. The water content of pasture could be dehydrated from 70% to 12% in 1 hour, while the fixed installation of heating system only dehydrated vater content to 24%. This system has characters of high dehydration rate and good stability, can largely increase the efficiency of solar drying pasture.