The invention relates to the technical field of kitchen utensils for cooking foods in steam, and discloses a steam hot-pot base with a detachable water tank.The steam hot-pot base is characterized in that a base is provided with a notch, the water tank is detachably connected to the notch, and the shape of the water tank is identical to that of the notch.The steam hot-pot base has the advantages that the water tank is a part of the base instead of being arranged inside the base or being completely arranged outside the base, accordingly, support effects can be realized, and a water storage container can be formed; users can detach the water tank and can carry out water tank cleaning work conveniently, accordingly, steamed foods are clean, and the steam hot-pot base is favorable for healthy diet of the users.