A pruning shear device includes a pair of pruning shears with a lug located at a rear end of a cutter blade thereof, and a switch unit including a position-limiting member movable between a first position where the position-limiting member is abutted against the lug for enabling the pruning shears to perform in a normal operating mode for cutting off small tree branches through a single-stage force-applying operation and a second position where the position-limiting member is kept away from the lug for enabling the pruning shears to perform in an effort-saving operating mode for cutting off large tree branches through a multi-stage force-applying operation.一種可變操作模式之修枝剪，其包括一修枝剪及一切換單元，透過切換單元使修枝剪具有二種剪斷樹枝的操作模式；其主要在修枝剪的刀片後端的作動片設有一凸片，凸片的邊緣具有作用邊，並在修枝剪的一握柄設有一切換單元，切換單元具有一限位元件，限位元件可實施為一滾動體，使限位元件可在握柄的第一位置與第二位置之間移動，限位元件在第一位置時頂靠在凸片的作用邊，限位元件在第二位置則不會頂靠在凸片的作用邊。藉此，本創作可變操作模式之修枝剪，能提供使用者切換成一次施力一刀剪斷的模式，或切換成分次施力分段省力剪斷的模式。
