The present invention provides a drip irrigation apparatus which includes a barrel, 5 wherein the barrel has a covering space, an irrigation opening, a branch penetrating hole, a snap-in slot and a matching part； the snap-in slot is used for a branch to pass through, so that the branch penetrates through the irrigation opening and the branch penetrating hole； and the matching part is used for matching a drip irrigation pipe, so that irrigation water flowing out of the drip irrigation pipe can flow into the covering space. When in use, 10 the barrel covers the outer circumference of a branch root of a sapling. The drip irrigation pipe is installed on the barrel； the irrigation water flowing out of the drip irrigation pipe flows into the covering space via the matching part and flows into a field via the irrigation opening； and the irrigation water flows by the covering space, so that the evaporation amount can be greatly reduced. The irrigation water flows out via the irrigation opening 15 and is drip irrigated from the ground surface, so that the drip irrigation range can be enlarged, and the water accumulation is unlikely to occur. The matching part is breathable, so that the ventilation of the root can be ensured, and the drip irrigation apparatus is suitable for various types of soil environments.
