This study has been designed and performed to identify the effect on insomnia patients according to th injection of herbal medicine induced from Sanjoincho.The result of the injection shows as follows.1. Total duration of sleeping time showed 1.1500${pm}$1.5433 hours of increase. (p〈0.01, respectively)2. Delaying time before the onset of sleep showed 0.8158${pm}$1.3251 hours of increase in sleep onset insomnia(p〈0.05, respectively)3. The wake times showed 1.375${pm}$1.4079 times of decrease in sleep maintenance isomnia. (p〈0.05, respectively)