In order to solve the problem of growing energy consumption in drying fruits and vegetables and advance the quality of fruits and vegetables processing, a kind of fruits and vegetables dryer was designed based on market demand for the dryer and drying characteristics of fruits and vegetables. The effects of air temperature and relative humidity on the evaporation rate of fruits and vegetables were analyzed, as well as the influence of design parameters on drying uniformity and energy consumption. A structure scheme of static small-sized dryer for fruits and vegetables with circulating airflow was created. Orthogonal test method was used to optimize the structure parameters of the dryer and the uniformity of drying air flow and drying uniformity were monitored by measuring temperature changes of fruits and vegetables.