The invention relates to a production method of an electrode of a supercapacitor and solves the problems that the existing supercapacitor electrodes are complex to produce, slow to produce and low in production efficiency. The production method includes the steps of 1, by weight, adding 19 parts of powder of electrode active material and 0.5 to 2.5 parts of organic binder to 800 to 2000 parts of absolute ethyl alcohol, performing ultrasonic dispersion for 30 min to obtain stable and uniform electrode powder suspension; 2, soaking an electrode current collector in the electrode powder suspension made in the step 1, allowing standing for 5s, extracting the electrode current collector, and performing blow-drying; 3, repeating the step 2 three to eight times to produce the electrode of the supercapacitor. The organic binder is ethyecellulose terpilenol solution; the ethyecellulose accounts for, by weight, 80 to 95% of the organic binder.