The invention relates to a converter valve power unit structure which comprises a valve, a capacitor, a control cabinet and a framework. The control cabinet, the valve and the capacitor are sequentially arranged in the framework from front to back, the control cabinet is of a stacked structure, the valve comprises a water baffle, a top plate, AC busbars, DC busbars and a water channel, one side of the valve is provided with the water baffle, the water baffle is provided with a line passing hole, the AC busbars extend out of the bottom o the water baffle, the other side of the valve is provided with the DC busbars connected with the capacitor, and the top plate is provided with the water channel. The converter valve power unit structure has the advantages that an integrated structure is adopted, a power supply structure, a control structure and a conversion structure are connected and integrated on one framework, the structure is more compact and more attractive, the top plate for water inflowing and outflowing is provided with the water channel, water flows out of a power unit along the water channel, and accordingly operation stability and safety of equipment are greatly improved. The control cabinet is of a stacked structure, wire distributing and connecting time is effectively saved, and detachment and maintenance are more convenient to achieve.