The invention relates to the technical field of pogo pin machining, in particular to a pogo pin probe slotting necking machine and a working method thereof. The pogo pin probe slotting necking machinecomprises a rack, a rotary plate arranged on the rack, a lifting air cylinder and an intermittent rotating mechanism used for driving the rotary plate to rotate intermittently, wherein four clampingmechanisms used for clamping workpieces are arranged on the rotary plate at intervals, a lifting rod is connected to a piston rod of the lifting air cylinder, rotating frames matching with the material clamping mechanisms are arranged at the end, away from the lifting air cylinder, of the lifting rod, and an air blowing material distributing mechanism, an opening punching mechanism, a deburring mechanism and a discharging necking mechanism are arranged on the rack and correspond to the material clamping mechanisms. According to the pogo pin probe slotting necking machine and the working methodthereof, the production and machining efficiency is high, the production cost is lower, and the burden of enterprises can be reduced.