The invention discloses a mushroom-stick convenient to supplement water in the field of mushroom plantation, and comprises a framework, a material bag, and locking covers. The framework is provided with an axial water injection channel. Two ends of the framework are provided with the locking covers. The locking cover is provided with a hole communicating with the water injection channel. The framework is provided with a plurality of water injection pipes. The water injection pipes are communicated with the water injection channel. The water injection pipes are provided with a plurality of drain holes The material bag is on the outer side of the framework. Two ends of the material bag are fixed on the framework. Fungous materials are filled between the material bag and the framework. The mushroom-stick is high in strength, and is not easy to damage, the mushroom-stick is provided with the water injection channel, and water supplementation is convenient, so as to completely supplement water for the mushroom-stick, and water supplementation effect is good and water supplementation efficiency is high.