A method of reducing renal hypertension applied for electrically stimulating a target zone of an organism having a symptom of renal hypertension by using an electronic stimulation device. The electronic stimulation device comprises at least one electronic stimulation unit. The electronic stimulation unit includes at least one first electrode and at least one second electrode. The method includes the following steps. The electrical stimulation unit is placed near the target zone. The electrical stimulation unit generates an electrical stimulation signal and the electrical stimulation signal is introduced to the target zone so as to stimulate the target zone. An electric field is generated between the first electrode and the second electrode and covers the target zone. The strength of the electric field ranges from 100V/m to 1000V/m.