Abstract: The equipment of natural ventilation storage house was improved in order to satisfy the different storage periods of citrus in this paper, and it resulted into the production of two kinds of improved storage house as follows: type Ⅰ and type Ⅱ. The type Ⅰ with relatively perfect ventilation equipment can make good use of natural resources, which is more adaptable for short storage of citrus; But stored in type Ⅱ, citrus maintain such excellent properties as high quality, freshness, and satiation for about 180 days, a relative long storage period, for some equipment useful for refrigeration and increasing moisture was installed that can maintain the temperature of 10～12℃ and the RH(relative humidity) up to 80% in the storage house. According to the experiment, in this condition, the whole consumption rate was only 9.24%, which means that more than 7 000 RMB yuan can be obtained by storing 10 000 kg citrus fruits. Besides, the type Ⅱ improved natural ventilation storage house is of some other advantages such as energysaving, low cost and easy management, which made it possible to be widely used by farmers and sale departments.