The invention relates to the technical field of intelligent home, in particular to a gas stove monitoring and alarm device preventing overflow of soup. The gas stove monitoring and alarm device comprises an annular flow guiding plate externally sleeving a pot body, a liquid box connected to the annular flow guiding plate, an alarm apparatus and a fire turning-off mechanism; the outer edge of the annular flow guiding plate is higher than the inner edge of the annular flow guiding plate, and one side of the annular flow guiding plate is higher than the other side of the annular flow guiding plate; the liquid box with a hollow structure and an opening end is arranged on the annular flow guiding plate, and the lower part of an opening part is cut into a liquid holding part and an evaporating part which do not communicate with each other through a heat conduction isolation part; an anti-overflow electrode is arranged in the liquid holding part, the anti-overflow electrode is electrically connected with the alarm apparatus, and the fire turning-off mechanism comprises a telescopic air cylinder, a connecting rod and a clamping part; one end of the connecting rod is hinged to the output end of the telescopic air cylinder, and the other end of the connecting rod is hinged to the clamping part; and the air inlet end of the telescopic air cylinder communicates with the evaporating part through an air pipe. The technical effects that the soup is prevented from continuously overflowing while analarm is issued are achieved.