Abstract: Abstract: In this study, an attapulgite-stabilization pond model was first proposed to deal with the practical problems of domestic sewage treatment such as low efficiency, high energy consumption, and drainage substandard in cold rural regions. A stabilization pond was assembled by a facultative pond reactor and aerobic reactor. Both reactors are cylinders, and the effective volume was 150 L. Before running the experiment, the facultative pond reactor was inoculated with anaerobic activated sludge and the aerobic pond reactor was inoculated with aerobic activated sludge to achieve a fast start of the experimental device. During running the experiment, the experimental procedure was that first the low temperature sewage was sent to the high tank from the storage tank by submersible pump, and then it flowed to a collection tank through a waterfall device, At the same time, this process achieved an increase in dissolved oxygen in the sewage. Then the low temperature sewage entered the facultative pond reactor for processing and then flowed into the aerobic pond reactor for processing. A stirring device was set up in the facultative pond reactor, so that activated sludge in the facultative pond bottom could fully contact with sewage, and by means of an aeration device aerated the aerobic reactor pond, so that the resulting mixture could get sufficiently dissolved oxygen. These operations could improve the purifying function and purifying effect of the process in a low temperature environment. Attapulgite was manually added to both reactors. Finally, the low temperature sewage flowed into a clear water tank. PLC was creatively applied to the experiment design, editing the operation of the reactor on a host computer, and the edited program was entered to the programmable logic controllers, then the test could be automatically, precisely and stably run controlled by the programmable logic controllers. The test researched the optimal operation parameters and the influenced of attapulgite fillers on the sewage treatment effect at a low temperature of 10℃. The test results showed that HRT, aeration time and pH had varying degrees on low temperature sewage by an attapulgite-stabilization pond, and from the two considerations of efficiency optimization and economic optimization, we selected control parameters in a low temperature as follow: pH was between 7.2 to 7.8, facultative pond's HRT was 4 d, aerobic pond's HRT and aeration time were 36 and 4 h, the average removal rates of COD, ammonia nitrogen, and TP were 91.5%, 87.7% and 84.1%, the average effluent concentration were 35.6, 4.5, 1.0 mg/L, and the treated sewage could meet the national emission standards. The results showed that running the combined system under optimal parameters could achieve that the attapulgite-stabilization pond effectively removed sewage at low temperatures. Through the parallel comparison test it was shown that when there was not attapulgite in a stabilization pond, the average removal rates of COD, ammonia nitrogen, and TP were 87.9%, 81.7% and 79.4%, they were reduced by 3.6%, 6.0%, and 4.7%, so it would effectively weaken the sewage treatment effect by single stabilization pong under a low temperature. The attapulgite-stabilization pond model can effectively remove organic matter and nitrogen and phosphorus pollutants in cold rural sewage. It plays an important role in cutting rural water pollution, reducing the water environment load, and improving the rural ecological environment. At the same time, it is also developing a new direction for the application of attapulgite.