Background mental imagery is a multi-componential process involving different mental operations. Objective The present study investigated the subsystems of visual mental imagery processing and their interactions. Methods: Four experimental tasks were done: (1) object, the ability to generate global mental images; (2) resolution, the ability to generate vivid,high-resolution mental images; (3) transformation,the ability to mentally rotate patterns in images, and (4) spatial imagery,spatial cognition. 91 university students (77 males, 14 females) participated in this study. Results: Object task was highly correlated with resolution task, and the same the tendency was found between transformation task and spatial task. Conclusion: The results indicate there are different subsystems of visual mental imagery and corresponding operative strategies, but with strong correlation among these processes and abilities.