RESUMO
Objective To understand the quality of construction and sanitation of double_urn_and_single_funel(DUSF)latrines widely popularized in He'nan province and its current problems.Methods The qualities of contruction and sanitary management of 1269 DUSF latrines were investigated in countryside of Zhengzhou.Results The total qualified rate of the construction quality was 86.9% for 1269 observed DUSF latrines.The constituent ratios of latrines with good,moderate and bad sanitary management were 43.4%,33.4% and 23.2% respectively.The percentages of the latrines with auxiliary facilities such as flax brushes,tolet paper collectors and water storage tanks were 66.5%,67.3%and 39.4% respectively.Conclusion The quality of construction of DUSF latrines in countryside of Zhengzhou was qualified on the whole.But the sanitary management and maintenance of DUSF latrines should be improved further.