Application of traditional Chinese indian lettuce in preparation of diabetes drugs

The invention relates to a new application of traditional Chinese indian lettuce in the pharmaceutical field, in particular to the application of drugs for curing or preventing diabetes. Experiments prove that rats suffering from diabetes due to streptozotocin significantly decrease urinary output, put on weight gradually and significantly decrease blood sugar level after being fed with the aqueous extract of traditional Chinese indian lettuce. Experiments also prove that no evident toxic side effect produces after rats are fed with the traditional Chinese indian lettuce by 200 times more thanan adult equivalent dose by the maximum gavage amount to the rat (0.4 ml/10g).