To provide a light-weight household simple bathtub dedicated to foot bath capable of being moved anywhere and immediately used when there is a power source, which is the bathtub that enables bathing with clothes on, can be used while enjoying a meal or television or reading a book sitting in a comfortable chair or the like while having the foot bath by placing it under a dining table or a table, can use the essence of a hot spring, medical herbs, medicines or perfumes or the like for bathing water further, and can achieve not only a household foot bath but also the public health amusement effect of a "foot bath house", a foot bath pub, a karaoke house, and a noodle shop, etc., by manufacturing a circumfluence bubble water type foot water circulation type bathtub.

This bathtub comprises: a freely portable automatic temperature adjustment kettle 4 for Japanese and western style rooms; a foot bath water filtering device; a bath water container; a bath water bag; and a foot bathtub 1 with a foot plate.