Infant remaining needle

The utility model relates to the technical field of remaining needles, in particular to a remaining needle for a baby. The utility model provides a remaining needle for a baby. The remaining needle for the baby comprises a catheter seat, a heparin cap, an end cap, a sealing cover and a lock cover. The catheter base is of a three-way structure, the heparin cap is installed at one infusion end of the catheter base, the end cap is installed at the other infusion end of the catheter base, and the liquid outlet end of the catheter base is used for being communicated with a hose. A lock cover is screwed on the heparin cap, at least one liquid passing hole is formed in the lock cover, and the axis of the liquid passing hole is not collinear with the axis of the lock cover; a sealing cover is connected to the lock cover in a threaded mode, and a liquid through hole is formed in the sealing cover. According to the indwelling needle for the baby, a completely sealed environment can be formed at the opening end of the h