Abstract: The motion of bubbles can be used to analyze the formation and evolution of flow patterns, which is the basis for exploring the construction of two-phase flow models. In order to further study the motion characteristics of air bubbles in various solutions, we built an experimental platform for bubbles. We experimentally studied the motion characteristics of a single-air bubble in three concentrations of FeCl₃, CaCl₂, NH₄Cl ionic solution and deionized water. In the experiment, we used a high-speed camera to take pictures and put them into MATLAB software for calculation. Based on the data, we analyzed the rise time, detachment time, initial equivalent diameter, and aspect ratio of single bubbles in the ionic solution. The results show that the ionic solution can promote the detachment of bubbles at the nozzle to a certain extent, which reduces the detachment time. Especially when the nozzle is 1.5 mm, the promotion effect is most obvious. Compared with deionized water, the rise time of all three bubbles is shortened, but the difference is small. Among the three ionic solutions, the bubble aspect ratio changes the most in FeCl₃ solution. The NH₄Cl solution has the strongest promotion effect on the initial equivalent diameter of bubbles, while the CaCl₂ solution can inhibit the development of the equivalent diameter of bubbles. Therefore, in the special fluid machinery, calcium ions should be appropriately increased to reduce the impact of corrosion and vibration. The aspect ratio of the air bubbles in both deionized water and the three ion solutions will have an L-shaped distribution, and the maximum aspect ratio occurs at the moment when the bubbles leave the nozzle.