Windowing tool capable of being recycled through one-time drilling

The invention provides a one-time drilling recoverable windowing tool which comprises an arc surface whipstock body, and the side face of the arc surface whipstock body is provided with an inclined face. The milling cone is arranged at the upper part of the arc-surface whipstock, the milling cone is connected with the arc-surface whipstock through a first shear pin in an initial state, and after the first shear pin is broken, the milling cone can move along the inclined surface and reach the wall of the casing pipe; and the supporting mechanism is arranged below the arc surface whipstock and is supported on the sleeve under the action of gas pressure. One-time windowing of the multilateral well can be achieved, the operation efficiency is high, the tool can be recycled, and the anchoring reliability is high; a pressure balance structure is arranged, the pressure transmission cylinder is communicated with the upper cavity and the lower cavity formed by the leather cup and the sleeve wall, and smooth applicatio