The invention discloses a simple influenza virus detector comprising a body. The lower end of the body is provided with a handle. The left end of the body is provided with an air blowing port. The upper and lower side walls of the air blowing port are symmetrically provided with two pulley cavities in a left-and-right direction. A clamping mechanism is arranged in each pulley cavity. A replaceabletest paper board is arranged in the clamping mechanism. The simple influenza virus detector is simple in structure, convenient to maintain and convenient use. The device can quickly screen and examine influenza patients and can test the patients painlessly, efficiently and conveniently in comparison with the traditional blood sampling test so that the test efficiency can be greatly improved and doctors are enabled to make correct diagnosis of the patients as soon as possible.