Irrigation device for banana planting

The utility model provides a banana planting and irrigating device which comprises a water collecting tank, the water collecting tank is fixed through a fixing plate, a threaded hole, a bolt and a fastening ring, a water outlet is located above the root of a banana tree, and then water is injected into the water collecting tank. The floating plate is driven to move upwards along with the rising of water, so that the floating plate is in contact with the waterproof switch, an alarm is triggered to remind an operator to stop injecting water, and the waste of water resources due to the fact that water flows outwards through an overflow port to confirm the water level in an existing irrigation device is avoided; the water collecting tank is arc-shaped, so that the water outlet is also arc-shaped, the roots of the banana trees can be uniformly irrigated, and the situation that the roots of the banana trees need to be irrigated in a winding manner by moving a pipe of an existing irrigation device is avoided; theref