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１９８８～１９９１年全国３０个省（区市）共调查了７２６个县２８４８个点，１４７７７４２人。溶组织内阿米巴感染呈全国性分布，但分布不匀。全国平均感染率为０．９５％（±０．０４％），最低为０．０１％，最高为８．１２％，平均感染率超过２％的省、自治区有西藏（８．１２％）、云南（２．５４％）、新疆（２．３７％）、贵州（２．２５％）和甘肃（２．０４％），所调查的７２６个县中，阴性者２０１个县（占检查县的２７．６９％），阳性县５２５个，占７２．３１％。感染率在１％以内的县占阳性县的６６．０９％，感染率高于１０％者仅１４个县占阳性县的２．２９％。不同民族的感染率不一。感染率有随年龄增加而上升的趋势，至１５岁以后感染率有波动，变化不大。女性感染率（０．９４％）高于男性（０．８４％）。新疆与河北的感染有家庭聚集性现象。感染率因温度带、干湿区域及饮用水源而异。
From 1988 to 1991, 30 provinces (autonomous regions and municipalities) surveyed 2848 points and 1,477,742 people in 726 counties. Entamoeba histolytica infection was distributed nationwide, but unevenly distributed. The national average infection rate was 0.95% (± 0.04%), the lowest was 0.01% and the highest was 8.12%. The average infection rate was more than 2% in provinces and autonomous regions including Tibet (8.12%), Yunnan (2.54%), Xinjiang (2.37%), Guizhou (2.25%) and Gansu (2.04%). Of the 726 counties surveyed, 201 counties 27.69%), positive counties 525, accounting for 72.31%. Counties with infection rate less than 1% accounted for 66.09% of positive counties, infection rate was higher than 10% and only 14 counties accounted for 2.29% of positive counties. Different nationalities have different rates of infection. The infection rate tends to increase with age, and the infection rate fluctuates little after 15 years of age. The rate of female infection (0.94%) was higher than that of men (0.84%). Infection in Xinjiang and Hebei has the phenomenon of family aggregation. Infection rate varies with temperature, wet and dry areas, and sources of drinking water.