Dynamic point symbols are increasingly utilized in geographic information visualization interfaces, as they are believed to enhance users’ ability to identify information more efficiently. However, practical applications often lack well-defined design strategies and guidance for implementing dynamic point symbols in map-based visualizations, and there is no consensus on the optimal forms of dynamic coding for these symbols. While some previous studies have explored perceptual differences in dynamic visual coding, none have experimentally investigated the effects of two key factors: dynamic types and velocity. In this study, we employed a within-subjects experimental design, with independent variables focusing on these two factors (dynamic type and velocity) across multiple dynamic visual coding forms. The findings indicate that both the type and velocity of dynamic point symbols significantly influence visual search performance in maps. These factors are closely related and should be carefully considered when selecting dynamic types associated with specific velocity levels. Based on the results, we recommend that map designers use colour-changing point symbols, which have proven to be particularly effective. Additionally, flickering is advantageous when applied at lower velocities, whereas pulsation coding should be avoided in map interfaces.