To provide a differential device for a front wheel, improved so as to restrain the occurrence of seizure and abnormal abrasion of a pinion bearing on the vehicle body rear side, even while upwardly lifting the vehicle body rear side.

A lubricating oil guiding passage 7 for guiding lubricating oil 5 to an upper part of a pinion bearing 3 and a pinion bearing 4, is arranged between san upper outer wall surface and an upper inner wall surface of a vehicle body rear side part 12 of a case 1. This lubricating oil guiding passage 7 is the vehicle body front side and includes an inlet opening part 71 in the vicinity of a ring gear 2, and is the vehicle body rear side and includes an outlet opening part 72 in an upper part of a pinion shaft 6. A lower inner wall surface of the lubricating oil guiding passage 7, that is, an inner wall surface 73 close to the pinion shaft 6, also projects in the direction of the pinion bearing 4.