A hand-held blender includes a housing and a body. The body is disposed in the housing, and the body comprises a microprocessor, a pressure sensor, a pressure button, a driving device, a coupling, a stirring rod, a power switch and a safety protection device; the coupling is connected with the stirring rod and driving device, respectively; the microprocessor is connected with the driving device. The safety protection device includes a safety switch and a security processing chip; the security processing chip is connected with the safety switch and the microprocessor, respectively; the microprocessor unlocks or locks the whole circuit of the hand-held blender only after receiving the signal of unlocking or locking from the security processing chip; the pressure sensor is connected with the pressure button and the microprocessor, respectively; the microprocessor controls the voltage provided to the driving device in accordance with the pressure applied on the pressure button.