Various detecting methods for poisonous fake wine are studied and their advantages and disadvantages are analysed. On the base of these works the paper putsforwarda new detecting method and verifies it by some experiments. After the chemical reaction, components of sampleshould be split on the filmy board,methanolshould be oxidized by potassium permanganateand turn into formaldehydewhich should change its color with sulfurous acid. The change can be detected by sensitive-color device and detecting result can determineif contentof methanolin wine is exceeding the standard. [WT5HZ]