The invention discloses a connecting structure between porous flat tubes and a tube plate of an aluminum-type air cooler. The connecting structure comprises a plurality of porous flat tubes, a tube plate, a tube box and a sealing plate, wherein the porous flat tubes are inserted into tube holes in the tube plate and the sealing plate and are fixedly connected with flanges of the tube holes of thesealing plate to form tube heads, the periphery of the sealing plate is fixedly connected with the tube plate, sealing glue is injected into the spaces between the tube plate and the porous flat tubes, and the tube box is fixedly connected with the periphery of the tube plate to form the connecting structure between the porous flat tubes and the tube plate of the aluminum-type air cooler; and theporous flat tubes are fixedly connected with the sealing plate to achieve the sealing effect of the structure, the tube plate and the tube box are fixedly connected to achieve the pressure-bearing effect, so that the design of the sealing plate and porous flat tube brazing heads is not restricted by the thickness of the tube plate and the machining precision of the tube plate, and the optimal design of the lap joint length and lap joint gap required by the tube head brazing process can be realized. The connecting structure has the advantages of being simple in processing and manufacturing of all components, high in pipe head welding percent of pass, and good in bearing, vibration resistance and sealing performance.