The invention provides a multifunctional valve for a tail end of a micro-irrigation pipeline, and relates to the field of micro-irrigation. The multifunctional valve for the end of the micro-irrigation pipeline comprises a valve body, a sealing gasket, an adjusting ring part, and an opening and closing assembly, wherein the valve body comprises an outer wall, a first cavity, a second cavity and athird cavity; a cavity water inlet hole penetrating through the first cavity and a cavity water outlet hole penetrating through the third cavity are formed in the outer wall; the sealing gasket comprises a sealed water inlet hole and a sealed water outlet hole; the sealed water inlet hole communicates with the cavity water inlet hole; the sealed water outlet hole communicates with the cavity wateroutlet hole; the inner surface of the adjusting ring part comprises an automatic flushing area; the automatic flushing area is provided with a channel for increasing water head loss of water flow flowing through the channel; two ends of the channel are provided with a channel water inlet hole corresponding to the sealed water inlet hole and a channel water outlet hole corresponding to the sealedwater outlet hole; and the opening and closing assembly comprises a gate body. According to the multifunctional valve for the end of the micro-irrigation pipeline, the water head loss of the water flow flowing through the channel is increased through the channel of the automatic flushing area, so that the water flow slowly enters the third cavity, the gate body is delayed to float to close the second cavity, and the effects of automatic flushing and automatic closing of the pipeline are achieved.