Glacial acetic acid cotton swab

The invention discloses a glacial acetic acid cotton swab, and relates to the technical field of medical instruments. A glacial acetic acid cotton swab comprises a liquid storage part, a main rod and a cotton head part, the liquid storage part comprises an annular shell, an elastic film and a liquid storage bag, pressing holes are formed in the front side and the rear side of the annular shell, the elastic film covers the positions, at the pressing holes, of the annular shell, liquid medicine is contained in the liquid storage bag, the liquid storage bag is fixedly connected into the annular shell, and the main rod is fixedly connected with the cotton head part. The edge of the coronal plane section of the liquid storage bag is connected with the annular shell, vent holes are formed in the liquid storage part, a main rod is fixedly connected to the lower side of the annular shell, the diameter of the main rod ranges from 1 mm to 3 mm, the length of the main rod ranges from 120 mm to 180 mm, a capillary channe