A radiator module structure includes at least a heat guide pipe, a frame member, a fan and at least two cooling fin sets. The guide pipe has a heat receiving section joined to a base and at least two heat dissipation sections extending upward and being away the base. The frame member is upright disposed on the base and faces the heat receiving section. The frame part of the frame member at least has a clip hook part at the bottom thereof to engage with base and the fan is received in the frame part to respectively face the two cooling fin sets, which are penetrated with the heat dissipation sections.