In order to know the prevalence of cysticercosis and taeniosis among food traders at the markets of a political delegation in Mexico City, 262 traders were interviewed among 11 markets in Xochimilco. Coproparasitoscopic serial studies and western blot assay in sera were done looking for T. solium eggs and specific antibodies against cysticerci respectively. From interviewed persons, 115 delivered fecal samples and 110 provided blood samples. Prevalence of cysticerco-antibodies was 0,9% and T. solium eggs were not found. Traders used to sell any kind of food related with pig meat, 11,3% used to breed at home pigs and sacrificed them illegally to sell their meat. Otherwise as observed in other country (Peru), traders in pig meat food that work at markets in Mexico City seldom seem to be exposed to T. solium.