The invention discloses a multifunctional fish tank with a thermometer. The multifunctional fish tank is novel in structure, simple and practical, internal space thereof is sufficiently utilized, the problem of inconvenience in lifting the fish tank with hands when people pours out water is solved and operation is convenient. A partition is arranged at the bottom of the fish tank so that articles can be conveniently stored. The thermometer is convenient to observe temperature and facilitates feeding. The multifunctional fish tank with the thermometer comprises a fish tank body, the bottom edges of the front side and the back side of the fish tank body are provided with a plurality of grooves, the bottom of the fish tank is designed to be the partition with hollow inside and an opening, and the thermometer is arranged on the body of the fish tank body.