Organic solvent-free preparation method of sinomenine hydrochloride cataplasm

The invention provides a preparation method of sinomenine hydrochloride cataplasm. The preparation method of sinomenine hydrochloride cataplasm adopts cation exchange resin or macroporous adsorption resin to replace conventional benzene extraction and chloroform extraction processes with large toxicity. The method is high in extraction yield and simple in operation, avoids harm and pollution of large amount of toxic organic solvent to operator health and environment, reduces treatment process of organic solvent, benefits environment protection and environment-friendly production, and reduces input of factory environment-protection facilities. The sinomenine hydrochloride extracted and separated by the inventive method, as a pharmaceutical material, has higher purity, no solvent residue, and reduced potential harm to human body.