To provide a leading part structure of EGR gas capable of realizing stable operation by improving distributing performance of EGR gas and preventing reverse flow of EGR gas to a throttle valve and sticking of deposit caused by EGR gas.

In an intake device for an engine provided with a first cylindrical guide member 10 disposed along an inner wall surface 2b of an intake passage 2a and a ring shaped exhaust gas leading passage 3 composed of an outer peripheral surface 10a of the first guide member 10 and an inner wall surface 2b of the intake passage 2a and extending to a downstream side of the intake passage 2a, block means 12a, 12b for partially blocking communication of a circumferential direction of the exhaust gas leading passage 3 to the first guide member 10, are disposed on an opening part 4b side and the other side.