To provide a concrete structure crushing/cutting device for a shovel machine which is for use when a reinforced concrete structure is crushed and cut, and especially available when the concrete structure is crushed and remaining reinforcements without being cut are cut by the operation of rotary arms, wherein the concrete structure crushing/cutting device carries out cutting operation not only at the time of the closing operation of the rotary arms but also at the time of the opening operation of the same.

The concrete structure crushing/cutting device for the shovel machine of a different type has a pair of the rotary arms which are axially supported by a holding frame having driving means in a rotatable manner. The concrete structure cutting/crushing device has a reinforcement cutting auxiliary cutter fixed to the holding frame for pinching and cutting the reinforcement between the external peripheral surface of the rotary arm and the holding frame when the pairing rotary arms are pulled in the holding frame by the driving means of the rotary arms.