It aims to study the factors that influence the light transmittance and haze of poly (vinyl alcohol)-konjac glucomannan packaging film. With glycerol and sorbitol as compound plasticizer, purified konjac powder and poly (vinyl alcohol) were blended by water bath at constant temperature based on certain mass ratio, and then stretched and dried to prepare the packaging film. Effect of blending temperature, blending time, basic material proportioning and mixed ratio of plasticizer on the light transmittance and haze of the packaging film was studied. Purified konjac powder and PVA were mixed in accordance with the mass ratio of 1∶10, and blended by water bath at 80 ℃ for 3 h. Then 10% mixed plasticizer was added. When the mass ratio of sorbitol and glycerol in the plasticizer was controlled at 1∶2~1∶3, the light transmittance and haze of the packaging film was the best. In conclusion, various factors have a great influence on light transmittance and haze of packaging film, because that they can help konjac glucomannan molecules and polyvinyl alcohol molecules form strong synergy.