A three-dimensional maze structure contains: at least one body and at least one ball. Each body includes a central shaft, multiple partitions, and multiple paths. Each path is defined between any two adjacent partitions, among each path and any two adjacent partitions is formed a trapezoidal oblique surface, and each partitions is distributed by multiple semi-trapezoidal stop pieces, the stop piece has two peripheral ribs horizontally extending outward from two sides of each path to prevent the ball rolling out respectively, and between two facing peripheral ribs of any two adjacent stop pieces is defined a window. Each path has multiple fences and plural passages arranged in an irregular manner. Each ball rolls in each path of each body and a point with the trapezoidal oblique surface, hence each ball rolls and is stopped by the stop piece and then moves through horizontal path of any two adjacent partitions.