The present invention relates to a minimally invasive surgery tool having a variable bend. According to one embodiment of the present invention, provided is the minimally invasive surgery tool comprising: a shaft an end constituent element which is connected to one end of the shaft and a first joint portion which is arranged between the shaft and the end constituent element, wherein the first joint portion comprises a modifiable link portion which can variably form the bend by means of the reaction of at least one wire.