Abstract: This paper presents an experimental study of 2-Dturbulent jets discharged vertically through a rectangle submerged pipe into flowing non-stratified water of finite depth.The experiments were carried out in laboratory facilities of a closed system capable of maintaining steady-state conditions,and the condition for the transform of flow type is presented. The relat ionship between the velocity ratio and the position of vortex located in the near of the jets and the separated point is given also. The velocity vector in the center plane and the rate of centerline velocity are obtained by the Micro ADV system for 3 kinds typical jets Based on the data of velocity,the streamline contours in center plane for the jets are obtained by the software of Teck plot 7.5. There is a fall off of the upstream streamline near the jets. The vector of jets with velocity ratio,8 is showed for com paring with the numerical simulation.