In order to provide a further uniform carburizing treatment to an article to be treated, a carburizing treatment apparatus which performs carburizing treatment by heating the article to be treated in a treatment chamber, the inside of which is under reduced pressure and in a carburizing gas atmosphere, includes a temperature measurement means for measuring temperatures in a plurality of regions inside the treatment chamber and a temperature adjustment means for individually adjusting temperatures in the plurality of regions on the basis of measurement results of the temperature measurement means so that the article to be treated is given a uniform carburizing treatment.