Toilet reform is important task for the environmental health in rural areas. Unless the rural toilet situation has been radically improved, it is impossible to radically improve the public health feature in China. The construction of hygienic toilet and harmless treatment of excrement and urine are important to prevent and control disease, improve life quality, protect the health of peasants, especially children and women, develop ecological agriculture and build up rural spiritual civilization. Because the types of rural hygienic toilet are few, the level of technology is low, and the fund is insufficient, it inhibits the rapid development of rural toilet reform. The key problem is developing a suitable technology, which is scientific, rational, low-cost, and easily popularized.

       Uno Winblad et al. suggested the concept of Sanitation Without Water in 1985, and appealed utilizing excrement and urine, as well as constructing the global circle of ecological circulation. China is a country that applied manure for a longest time in history. For the sake of expanding effects, three sides among the office of National PHCC？？Swede Agency of International development and UNICIF signed for cooperation memorandum, which implemented project of ？？the Feasibility Study of Application and Promotion Ecological Sanitation with Urine Diversion in China？？.

       Technique Principle and effect significance:

Intestinal virus, pathogenic bacteria, and intestinal parasite eggs are discharged out of human body through intestines with excrement.

Dehydrated and dry excrement is unfavorable for the reproduction and survival of pathogenic microorganism, mosquitoes, flies, and maggot. The excrement and urine can not mixed up, only excrement has been treated harmlessly, and its amount can be decreased 90%. The on-site treatment can efficiently protect underground water and surface water systems from the pollution. It is favorable for the environmental protection. 

Covering excrement, obstructing sulfur alcohol？？H2S and so on foul-smell materials dispersing to the air, and storing urine hermetically and avoiding lights so that delaying decomposition of urine.

The urine contains more nitrogen, phosphorus, and potassium than excrement. It is easier for the plants to be absorbed. Using organic fertilizer is favorable for ecologic agriculture.

Decreasing the consumption of water resources, changing the recognition of ？？water flushed toilet is the only developing direction of hygienic facilities？？, it overcomes the disabilities of disgusting the utilization of excrement and cleaning operations in order to established the foundation of rural dry toilet, and to improve the life quality of the peasants.

       Creativity and advancement:

The technique plan has been raised up that excrement and urine are separately collected and stored, then treated harmlessly, circulated and continuous deep treated with separation. And The <Ecological Sanitation with Urine Diversion> has been developed.

Designing route has the following features: at first time, the hygienic safety on excrement utilization becomes a technique key of ecological sanitation. It provides scientific basis for the successful application and popularization of ecological sanitation techniques.

Technique application has the creativity as below: it is first that the squat and sitting pans of the urine and excrement diversion have been designed in China.

It is the first time for us to cover the excrement with dry soil and 30% quick lime, resulting in sufficiently killing pathogen within 28 days, completely satisfying the requirement of the excrement harmlessness for quick response.

        Promotion:

The ？？Ecological Sanitation with Urine Diversion？？ is an innovation and suitable technique to solve excrement harmlessness. It has been popularized and applied in 16 provinces and cities for 3 years.