Wind tunnel for factory to test small wind driven generator

The invention discloses a wind tunnel for a factory to test a small wind driven generator. The wind tunnel is characterized in that: the wind tunnel includes a wind tunnel body that is fixedly placed indoors; the wind tunnel body is in a tubular shape, one end of the wind tunnel body is an air inlet and the other end of the wind tunnel body is an air outlet, wherein the dimension of the air inlet is larger than that of the air outlet; a fan support is arranged at the air inlet; and a fan set is arranged on the fan support and is formed by a plurality of fans. According to the invention, the usage of the wind tunnel is not restricted by the field condition and the weather condition; and advantages of security, economy, stable wind power and accuracy for measurement results are realized. Moreover, there is no need to carry out repeated modification and reinstallation on a test vehicle, thereby reducing testing cost. When the wind tunnel is applied, it can be realized that testing can be carried out whenever it