The present invention relates to a net supply device for a baler, which is to supply a net to a baler. The net supply device for a baler of the present invention comprises: a net holding box mounted on an upper portion of a baler, having a net arrangement space having a net inserted to be seated therein, and having one side opening part； a net press stand rotatably supported by and coupled to the net holding box to press and support the net seated in the net arrangement space of the net holding box in an outward direction； a link member fixed and coupled to one side end of the net press stand in a state of being positioned at the outside of the net holding box； and a gas spring having one end fixed to a side surface part of the net holding box and the other end supported by and coupled to an end of the link member coupled to the net press stand to automatically maintain a certain amount of tension when the net is supplied to the baler, and functioned to automatically maintain a certain pressurization and support force even when a size is changed in accordance with the usage amount of the net without separate manipulation. According to the present invention, the net can be constantly supported by maintaining a certain amount of tension for net winding of a bale by structural improvement of the net press stand and grafting of the gas spring. In particular, a constant resistance can be generated when a size is changed in accordance with the usage amount of the net without separate manipulation. Also, an existing phenomenon that net cutting and bale winding force is weakened as the force of the net press stand is weakened when a size is reduced in accordance with the usage amount of the net, can be solved.본 발명은 베일러에 네트를 공급하기 위한 베일러용 네트공급장치에 관한 것으로서, 상기 베일러의 상부에 장착되고, 내부에 네트를 넣어 안착 배치할 수 있는 네트배치공간을 갖되 일측 개방부를 형성한 네트거치박스； 상기 네트거치박스에 회동(回動) 가능하게 지지 결합되어 네트거치박스의 네트배치공간 내에 안착 배치되는 네트를 외측 방향에서 가압 지지할 수 있도록 한 네트누름대； 상기 네트거치박스의 외측에 위치된 상태에서 네트누름대의 일측단부에 고정 결합되는 링크부재； 상기 네트거치박스의
