A treatment method for domestic sewage containing high-concentration ammonia nitrogen. The treatment method is characterized in that a sewage treatment pool is provided and sequentially divided into a pretreatment pool A, a primary infiltration pool B, a nitrification pool C, a secondary infiltration pool D and a clean water pool E. The treatment method has the advantages that the investment cost is low, the cleanliness of treated water is high, the operation is stable during sewage treatment, the energy consumption is low, and the purified water can be directly drunk by livestock and also can serve as other domestic water. The treatment method is particularly suitable for water-deficient areas, and is low in investment, simple in operation management and low in maintenance cost.