The present invention relates to an automatic cooking device for soup, and more specifically, to an automatic cooking device for soup, capable of cooling a large amount of soup with constant concentration and viscosity by automatically stirring soup contained in a cooking container with speeds suitable for cooking of soup. The automatic cooking device for soup according to one embodiment of the present invention includes: a main body in which a burner is installed; a hemispheric cooking container for cooking soup; a support frame; and a stirrer which stirs soup contained in the cooking container with predetermined constant rotating speeds.본 발명은 교반기가 미리 설정된 죽의 조리에 적합한 회전속도로 조리용기에 담긴 죽을 자동 교반함으로써, 농도와 점도가 일정한 품질의 죽을 대량 조리할 수 있도록 한 죽 자동 조리장치에 관하여 개시한다.