A differential connector and a differential pair arrangement structure thereof and a differential connector plug, and relates to the field of electric connectors. The differential connector plug includes: two or more signal modules (1) stacked up in a layered manner, wherein the signal modules are combined two by two to form signal module pairs, two signal modules of the same signal module pair respectively form a first signal module (14) and a second signal module (15), at least one differential pair of the first signal module and at least one differential pair of the second signal module are respectively a first differential pair and a second differential pair, differential pair contact elements of the first differential pair and the second differential pair are respectively a first differential pair contact element (141) and a second differential pair contact element (151), and projections, in the layered direction of the first signal module and the second signal module, of at least one of two first differential pair contact elements of at least one first differential pair and at least one of two second differential pair contact elements of at least one second differential pair have a point of intersection. The differential connector plug does not need to be additionally provided with a shielding plate, is simple in structure, and solves the problems of low assembly efficiency and high processing cost caused by complicated structure of existing differential connectors.
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