·Herpes simplex keratitis(HSK)is one of the important causes of blindness.Its blinding and difficulty in treatment lies in its repeated attacks,leading to loss of vision.With the development of molecular biology,at present,great development has been made in the diagnosis of HSK,however,for the treatment of recurrent HSK,there is no effective drugs,which requires molecular biology,virology,traditional Chinese medicine and modern Western medicine working together.