PROBLEM TO BE SOLVED: To provide a technology which can suppress a shape deformation of a discharge flow.SOLUTION: A water discharge device includes a water discharge member 19 in which a discharge passage 33 is formed. The discharge passage 33 is formed by: a discharge port 13 discharging water； a reservoir chamber 37 reserving water flowing in from an upstream side； and a throttle flow passage 39 sending out the water in the reservoir chamber 37 to the discharge port 13. The reservoir chamber 37 includes a guide surface 81 formed on an upstream side and defining a part of the reservoir chamber 37. The guide surface 81 is arranged such that a distance between facing wall surfaces 71, 73 of the discharge passage 33 is narrowed continuously from a depth side of the reservoir chamber 37 toward an inlet 39a of the throttle flow passage 39.【課題】吐水流の形状の乱れを抑えられる技術を提供する。【解決手段】吐出通路３３が内部に形成される吐水部材１９を備え、吐出通路３３は、水を吐き出すための吐出口１３と、上流側から流入する水を溜めるための貯溜室３７と、貯溜室３７内の水を吐出口１３に送り出すための絞り流路３９とにより形成され、貯溜室３７の上流側には該貯溜室３７の一部を画定する誘導面８１が設けられ、誘導面８１は、貯溜室３７の奥側から絞り流路３９の入口３９ａに向かうにつれて、吐出通路３３の対向する壁面７１、７３同士の間隔を連続的に狭めるように設けられる。【選択図】図７
