There are necrotic spots on the leaf mosaic at the top of red melon, which is caused by virus infection of red melon and melon. Viral diseases should be mainly prevented to reduce losses. The spread of whiteflies, aphids, thrips and mites can be prevented by spraying amino oligosaccharide and lentinan with foliar fertilizer containing zinc or microelement foliar fertilizer (containing zinc) plus abietylamine, alkynyl oxalic acid or nitenpyram or dinotefuran, once every 5-7 days and continuously.

Morphine hydrochloride, octylamine acetate, ningnanmycin and bacterial toxin can also be used alternately, and the effect is good.