The invention provides application of 1,2,3,4,6-penta-O-galloyl-b-D-glucose in preparing a
medicine for resisting herpes simplex viruses, and in particular relates to application of the 1,2,3,4,6-penta-O-galloyl-b-D-glucose in preparing a
medicine for resisting
herpes simplex virus type 1. The 1,2,3,4,6-penta-O-galloyl-b-D-glucose has the function of preventing and treating cells infected by HSV-1, can also reduce the
infectivity of the HSV-1 on MRC-5 cells, has the function of directly killing the HSV-1, and can reduce the activity of MRC-5 cells infected by the HSV-1; and the
medicine for resisting the
herpes simplex virus type 1 prepared by taking the 1,2,3,4,6-penta-O-galloyl-b-D-glucose as an effective ingredient has high suppression ratio on the
herpes simplex virus type 1 within a safe dosage range, has strong function of preventing infection of the herpes simplex
virus type 1, quickly cures patients, can relieve syndromes of infected patients, and has
low toxicity and good stability.