Portable rock sampler

The utility model discloses a portable rock sampler which comprises an electric motor, a first connecting plate is fixedly mounted at the top end of the electric motor, a second connecting plate is fixedly mounted at the bottom end of the electric motor, a circular through groove is formed in the middle end of the second connecting plate, a drill rod is movably mounted in the circular through groove, and the drill rod is connected with the electric motor. One end of the drill rod is connected with an electric motor, the other end of the drill rod is connected with a drill bit, one end of the spring is connected with a telescopic rod, the electric motor is driven to enable the drill rod to rotate, so that the drill bit is driven to move synchronously, and then people press the connecting rod to enable the drill bit to move downwards. And at the moment, the telescopic rod plays a supporting role, so that the drill bit is more stable in the working process, the telescopic rod can adapt to the uneven ground under