Abstract: Abstract: Toilet waste composting is one of the main ways of rural toilet sewage resource utilization, which plays an important role in promoting the rural toilet revolution. In order to solve the problems of difficult disposal of rural toilet manure and poor environmental sanitation in rural toilets, a 110 L rural household composting reactor with negative pressure suction, spiral feeding- spiral coil aeration-membrane auxiliary heating was designed in this paper. The reactor structure included manure collection unit, aerobic fermentation unit, heat preservation unit and aeration unit. According to the principle of biological and thermodynamic, the negative pressure fan suction was used to collect manure automatically. In order to reduce the pressure loss of aeration fan, the aeration pipe was arranged Archimedean spiral structure, and the timer and aeration fan were used to realize controllable ventilation in composting process and improve composting quality. Insulation cotton membrane heating structure was adopted to achieve the heating and insulation of the reactor. The power of the reactor was 1.29 kW, the composting cycle was 15 d, the aeration frequency was 4 min per 26 min interval, the aeration rate was 1.75 L/min. The performance tests of composting reactor were conducted in September 2019. The manure and corn stalks with 1-2 cm particle size were placed in the reactor layer by layer according to the mass ratio of 4:1, and the samples were taken at 0, 3, 6, 9, 12 and 15 d after composting, respectively. The physical and chemical properties, such as temperature, water content, volatile solids, reliable content, seed germination index, the number of worm eggs and fecal coliforms of the samples during the aerobic fermentation process were tested, respectively. The results showed that the stalks and manure were layered with a strong odor during the first 2 d of aerobic fermentation. With the progress of aerobic fermentation, the manure gradually integrated into the gap between stalks and mixed with stalk. The color of the manure turned progressively dark brown and the odor faded. After 10 d of aerobic fermentation, the pile was dark brown, odorless, fluffier and moister with white filaments distributed on the surface. The high-temperature period lasted for 5 d. After 15 d of continuous fermentation, the fecal coliform bacteria was 46 MPN/g (≤100 MPN/g), the mortality rate of worm egg was 100%, and the seed germination index was 88.4%, which met the sanitary standard of harmless manure. The annual maintenance cost was saving 16% compared to the three-slot septic tank and 44% compared to biological purification tank household toilets.