The present invention discloses a usage of plant battery waste liquid as a formulation of prevention solution of panama disease and method of pest prevention of panama disease. The formulation of prevention solution includes hydrated oxide of silver, copper, iron, magnesium, zinc or aluminum and reactive oxygen specieswitch have antibacterial effect. Therefore, this prevention solution can spray into source of irrigation water of banana farmland in order to prevention panama disease and meets the contemporary trend of biomass use and environmental.本發明係揭露一種植物電池廢液作為滅減香蕉黃葉病菌之配方的用途及滅減香蕉黃葉病之方法,配方中之銀、銅、鐵、鎂、鋅、鋁之氫氧化物以及活性氧自由基具有殺菌之效果,因此可用於噴灑或澆灌於香蕉農田的灌溉用水以防治黃葉病菌,亦符合生質利用、環保的時代需求。S11~S15‧‧‧步驟S11~S15