A switch-free multi-cutting mode shearing tool includes a shearer including a first handle and a second handle pivotally connected together, a cutter blade pivoted to the first handle, a link pivoted to the second handle, and a pushing element mounted at the second handle. The cutter blade has a cutting edge protruding over a front end of the first handle, an actuation portion projecting between the first and second handles, an elongated slot located in the actuation portion and a plurality of engagement grooves inside the elongated slot. The link has a pin located at a movable end thereof and inserted into and movable along the elongated slot and selectively engageable into one of the engagement grooves, such that when the first and second handles are closed toward each other, the pushing element is forced to touch and push the actuation portion of the cutter blade.
