Protective sleeve for preventing eczema

The utility model belongs to the technical field of medical instruments, in particular to a protective sleeve for preventing eczema, which comprises a protective sleeve main body with a cavity inside, a medicine placing component is arranged in the cavity, the medicine placing component comprises a cotton net medicine bag placed in the cavity, a plurality of square blocks are formed on the cotton net medicine bag by sewing through needles and threads, and the square blocks are arranged in the cavity. A ventilation area is formed between every two adjacent square blocks, a locking assembly for fastening and fixing the two ends of the protection sleeve body is arranged on the protection sleeve body, and an opening communicated with the cavity is further formed in the protection sleeve body. Through the arrangement of the medicine placing assembly, the medicine placing assembly can be stably fixed to the arm of a patient, the effect of preventing eczema on the skin near a puncture point of the patient is enhance