When hyperkalemia is present, the resting potential is relatively reduced, the amplitude of the action potential is reduced, the speed is slowed down, and the overall conductivity is reduced. Therefore, hyperkalemia is a risk for bradycardia and conduction block. Hyperkalemia state will appear resting potential will be reduced, the amplitude of action potential zero-phase depolarization will be reduced, the amplitude of the whole action potential will be decreased, the conduction speed will be slowed down, so the overall state of bradycardia will be presented, and there is the possibility of cardiac arrest, so hyperkalemia on the heart is still relatively big, and need to consult a doctor in time, as soon as possible to deal with it. The presence of hyperkalemia not only affects the heart function, but also may cause numbness of limbs, muscle aches and pains, and confusion, so it is necessary to go to the hospital as soon as possible to standardize the treatment under the guidance of the doctor.