A heat dissipating module is disclosed, which comprises a plurality of fins having same or different shapes, a plurality of heat dissipating tubes, and a seat. The fins are stacked one next to another, each fin having a plurality of upper penetrating holes and a plurality of lower grooves or holes. The seat is formed of solid metal with a plurality of slots, each slot corresponding to the lower groove of the fin and having two upper sides extended with two shaping sheets. When the two shaping sheets are pressed and bent, they form a round hole with the slot for receiving a heat dissipating tube. This invention will result in improved heat dissipation.