Special drill bit for drilling based on geothermal exploration

The utility model relates to a special drill bit for drilling based on geothermal exploration, which comprises a connecting rod, the bottom of the connecting rod is fixedly connected with a protection component, the bottom of the protection component is fixedly connected with a drill rod, and the bottom of the drill rod is fixedly connected with a drill bit main body. According to the special drill bit based on geothermal exploration drilling, in the geothermal exploration drilling process, the protection pin mainly bears torque for driving the drill bit body to rotate, the drill bit body can normally work when encountering soft soil or hard rock, and when the drill bit body encounters hard rock, the instant torque is too large, so that the protection pin is fractured; and due to the arrangement of the anti-falling assembly, after the protection pin is broken, the drill bit body cannot fall to the well bottom and is convenient to recycle, the purpose that the special drill bit for geothermal exploration drill