A differential connector and its differential pair arrangement structure and differential connector plug, which relates to the field of electrical connectors. The differential connector plug comprises two or more stacked signal modules (1). A combination of two signal modules forms a signal module pair, and two signal modules of the same signal module pair constitute a first signal module (14) and a second signal module (15), respectively. At least one differential pair of the first signal module and the second signal module is a first differential pair and a second differential pair, respectively. The differential pair contact components of the first differential pair and the second differential pair are a first differential pair contact component (141) and a second differential pair contact component (151), respectively. At least one of two first differential pair contact parts of at least one first differential pair and two at least one second differential pair in the stacking direction of the first signal module and the second signal module There is an intersection point in the projection with at least one of the second differential pair contact parts. The differential connector plug does not need to have a separate blocking plate and has a simple structure, and has solved the problem of low mounting efficiency and high processing cost because the current differential connector structure is complicated. . [Selected figure] Figure 5
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