The characteristics of moisture retention of fluvo-aquic soils with different textures in the flood plain of the Huanghe River were studied by pressure menbmane method.Results showed that the modsture retention, distribution of pore space and specific water capacity of the soil were generally closely reated to soil texture. The moisture retention was increasing with the soil texture getting clayey. As to the relationship between the pore space distribution and soil texture, it was found that the gravitationa water pore space was decreasing with soil texture getting clayey;and the slowly availalble water pore spare cad nnavailable water pore space were increasing with soil texture getting clayey;however, available water pore space in clayey soils tended to be de creasing with soil texture getting clayey. The specific water capacity of gravitiona water was increasing with soil texture gettinn clayey;and the specific water capicity of regidly available water of loamy soil was higher than that of the soils with sandy and clayey textures;while the specific water of slowly available water of light-clayey soil wus higher than that of the soils with orther textures.