Zedoary turmeric oil adhesive membrane for external application and preparation method thereof

The invention relates to a zedoary turmeric oil adhesive membrane for external application, which comprises a backing layer and a drug membrane adhered to the backing layer. The drug membrane is prepared by the following steps that: chitosan and an acetic acid solution with the mass fraction of between 0.5 and 5 percent are mixed to prepare a 15 to 25 mg/ml chitosan solution, then the chitosan solution is mixed evenly with a 30 and 40 mg/ml polyvinyl alcohol water solution to obtain a mixed solution, the mass ratio of the chitosan and polyvinyl alcohol is 1: 0.2-1: 5, then glycerol and zedoary turmeric oil are added into the mixed solution, a surfactant is added into the mixed solution, the mixed solution is stirred for 5 to 35 min and is kept stand for defoaming, the membrane spreading is performed, and the drug membrane can be obtained by drying in a baking oven with a temperature of between 20 and 45 DEG C. The adhesive membrane has good sustained control function; the adhesive membrane can be directly pas