PURPOSE: A germicidal cataplasm showing improved germicidal effects on bacterial such as Trichophyton(mold of athlet's foot), etc., and mildews, etc., consisting of a germicide comprising a polyamino.monocarboxylic acid, etc., as a main component and a film-forming material which forms a film on the surface of a matter to be applied and maintains the germicide.

CONSTITUTION: A germicidal cataplasm consisting of a germicidal comprising polyamino.monocaboxylic acids such as compound shown by the formula I(R is alkyl), formula II and formula III which are used as a surface active agent and has strong fungicidal effects to destroy Trichophyton(mold of athlet's food), benzalkonium chloride, a compound shown by the formula IV, as a disinfectant, as main components and, if necessary, a germicide comprising hexamethylenetetramine, o-dichlorobenzene, etc., and a film-forming material such as carboxymethyl cellulose, etc., which forms a film on the surface of a matter to be coated and maintains the germicide and a solvent such as water, etc., which applies the components to the surface of the matter to be coated.

EFFECT: The titled cataplasm can continue application effects for a long period and has weak toxicity and improved safety.