Cataplasm for treating arthralgia and preparation method thereof

The invention provides cataplasm for treating arthralgia and a preparation method thereof. The cataplasm is prepared from the following substances: a radix angelicae sinensis extracting solution, a radix angelicae pubescentis extracting solution, a radix saposhnikoviae extracting solution, a radix gentianae macrophyllae extracting solution, a cortex eucommiae extracting solution, a safflower extracting solution, a herba epimedii extracting solution, a rhizoma drynariae extracting solution, a rhizoma corydalis extracting solution, sodium polyacrylate, sodium carboxymethylcellulose, sodium alga acid, methyl-p-hydroxy benzoate, propylene glycol, distilled water and glycerol. Compared with the prior art, the cataplasm uses multiple natural and non-toxic traditional Chinese medicines with moderate drug properties and favorable medicine effects so as to be high in safety, strong in functions, convenient to carry, and simple to use; the medicines can easily permeate into a body so as to stably and enduringly exert e