Abstract: The present invention relates to a multi-purpose water sprayer in horticulture that is used as connecting to water pipe, more particularly a multi-purpose water sprayer in horticulture which increase a effect of water spray by increasing a water pressure at a point passing this water sprayer, can save water when spraying at crops in horticulture and be operated easily, may spray water in a spreading state from a stop state by declining a spouting angle to inward and then can control a strength and an amount of a sprayed water according to an angle, and can obtain an effect turning to a straight function or a spraying function.