The out casing of huamao solar oven is made of hard environmental protection wooden board, it is durable and insulation. Four high reflectivity metallic mirror is fitted in the lid so that reflected sunrays always fall on pots and tray, the reflector can be folded.

A glass fiber reinforced plastics lid is hinged to the body, can open for put into and fake out food; in the box is black painted aluminum tray. The Glass along with the tray and seals make it a closed hot chamber and prevents heat loss.　High-density insulation is provided at the bottom and around the cooking tray to prevent escape of heat.