A 2-step guide hood latch apparatus for a vehicle is provided, which by removing a conventional safety lever, a driver can open a hood merely with two times of manipulation of a release handle indoors without going out of the vehicle, thereby solving the conventional inconvenience of having to put the hand into the hood and manipulate the safety lever. To this end, the 2-step guide hood latch apparatus includes a pawl rotatably mounted on a base plate, a claw rotatably mounted on the base plate in such a way to be held with the pawl, and a guide lever, an end portion of which is hinge-coupled to the pawl by a hinge structure, and a center portion and the other end portion of which are coupled to the claw to induce 1-step lock and 2-step lock states of the claw, in which a hood is opened merely with manipulation of a release lever inside a vehicle.