General description of the research topic. The problem of studying the near-electrode voltage drop in a high-current spark discharge is considered. Relevance of the topic. An increase in the efficiency of electric-discharge generators dispersed metal particles is achieved by redistributing the balance of the energy deposition in the spark discharge between the gas-discharge channel and the electrode regions. The study of this balance requires measuring the distribution of potentials in the discharge gap of the spark discharge. The excessive complexity and high error of the existing technique for studying the near-electrode voltage drop in a spark discharge requires their further development. The aim of the article is to improve the technique for studying the near-electrode voltage drop in a high-current spark discharge. Research method, scientific novelty. A technique is proposed for determining the near-electrode voltage drop in a spark discharge in gases, based on measuring the voltage across the spark gap and calculating the electric field strength and nonlinear inductance of the spark channel from the experimental curve of the discharge current. Practical relevance and key findings. The developed technique for studying the near-electrode voltage drop in a high-current spark discharge allows to determine ways to increase the efficiency of electric-discharge generators of dispersed metal particles.