Organophosphorus insecticide residues were investigated in six kinds of fruits and five kinds of vegetables. The materials used in this experiment were grape, musk melon, apple, peach, plum, apricot, lettuce, green pepper, cucumber, pumpkin and tomato which were collected from June to September 1986 in Seoul. Residual pesticides investigated were Diazinon, Parathion, MEP (Fenitrothion), Malathion, EPN, MPP (Fenthion), PAP (Phenthoate) and Dimethoate and all samples were analysed by gas chromatographic technique with NPD (Nitrogen Phosphorus Detector). No sample was found to approach proposed national maximum residue limits in Korea.