The present disclosure discloses a water outlet device with adjustable water power. The water outlet device comprises a fixed portion, a water outlet portion, and an adjusting member. The fixed portion comprises a water inlet passage and a first connection portion. The adjusting member is disposed in the water outlet portion and is configured to move relative to the water outlet portion. The adjusting member comprises a second connection portion and an adjusting portion, the adjusting portion corresponds to the water outlet hole. The first connection portion and the second connection portion cooperate to drive the adjusting member to move close to or away from the water outlet portion so as to adjust a power of water flowing out from the water outlet hole.