The invention relates to the technical field of structural design of air purification equipment, in particular to a handheld memory type hole sinking device. The handheld memory type hole sinking device comprises a shell. A hole sinking drill bit is arranged at the front end of the shell, a motor is arranged in the shell, the hole sinking drill bit is connected with the motor through a connectingrod, a speed reducing mechanism is arranged at the joint of the motor and the hole sinking drill bit, an MCU module, a power module and a relay are further arranged in the shell, the relay is connected with the MCU module, and the power module is connected with the MCU module and the relay. A handle is arranged on the lower portion of the middle of the shell, a trigger switch is arranged at the front end of the handle and connected with the MCU module, a timing button and a counting button are further arranged on the side portion of the shell and connected with the MCU module, the motor is connected with the relay, and an indicating LED lamp is further arranged outside the shell and connected with the MCU module. Compared with the prior art, the handheld memory type hole sinking device hashole depth and hole number memory functions, and is convenient to use, and machining is standard.