An induced type fan comprises a motor which is of an inner rotor structure, an inner rotor shaft of the motor of the inner rotor structure is connected with an impeller of a fan and can drive the impeller to rotate, an outer housing of the motor of the inner rotor structure is fixed with a housing of the fan. According to the induced type fan of the utility model, the dismounting, the washing and the maintaining of the induced type fan are convenient and fast, the utility model has characteristics of simple structure, convenient manufacturing, mounting and maintaining, low cost and good using effect.