This invention relates to pipeline connection, and discloses specifically a fluid shunt device, comprising a container and one or more branch pipeline connection devices; wherein the branch pipeline connection device comprises a joint, a gland, a sealing piece and a lock piece; the front end of the joint is passed sequentially through the inner hole of the gland and the sealing piece, inserted into the container through the circular hole, and connected with the lock piece in the container, thus the sealing piece is clamped tightly by the joint between the container and the gland along the axial direction of the joint. The sealing for the connection between the branch pipeline connection devices and the container is reliable, and the technique for the processing of the product is simple.