The invention discloses a film sticking machine capable of automatically smearing heat conduction silicone grease. The film sticking machine comprises a workbench, wherein a feeding mechanism, a cutting mechanism, a conveying mechanism, a picking mechanism, and a clamping mechanism arranged on the conveying mechanism are sequentially arranged on the workbench; the feeding mechanism comprises a vertical plate, a container and a limiting portion; the limiting portion comprises a limiting channel, a transition column and a positioning column which are sequentially arranged along the X-axis direction of the vertical plate; the cutting mechanism comprises a bearing plate, a mounting plate, a cutting knife and a first driving mechanism; the conveying mechanism comprises a base, a fixing plate, asecond driving mechanism and a third driving mechanism; sliding rails are arranged on the upper surface of the base; a sliding block sleeves each sliding rail; the clamping mechanism comprises a positioning block, a pedestal and a clamping device; the positioning block and the pedestal are arranged on the fixing plate; a mounting position is arranged between the positioning block and the pedestal; and the picking mechanism comprises a supporting plate, a pneumatic guide rail arranged on the supporting plate and a pneumatic finger arranged at the end of the pneumatic guide rail. The film sticking machine has the advantages that the efficiency of fitting a radiator stuck to a heat dissipation thin film is improved.