Toxocaridae are nematodes belonging to the order of Ascaridae which commonly infects dogs and cats. In humans, the larvae do not develop into adult worms, but migrate to various tissues and organs and may survive for several years, inducing a number of clinical symptoms. Thus, clinical manifestations vary and are classified according to the organ affected.  Toxocara canis is common in tropical areas and in less developed countries, but is not so rare in industrialized countries. Here we report the case of a patient who suffered from recurrent bronchitis caused by T. canis infection. The correct diagnosis was established after detecting anti–Toxocara antibodies by ELISA and improvement of signs and symptoms after specific treatment was observed. This suggests the possible role of Toxocara Canis in inducing pulmonary inflammation, in particular, recurrent bronchitis.