Abstract: Taking a case study from Hebei Province．the economic loss from soil pollution，ground water pollution，crop pollution and health damage caused by sewage irrigation is evaluated by using the market value method，labor cost method．and engineering expenditure method． The results show that the total economic loss from environmental pollution caused by wastewater irrigation is 737 million yuan．which is 0．87％ of total agricultural output．The economic loss from health damage takes 95．3％ of total loss．So the environmental pollution from wastewater irrigation should be regarded enough．