A device for smelting and sampling pipeline steels for a converter belongs to a technical field in pipeline steel smelting for the converter in steel enterprises. The device comprises a steel cap (1), an aluminium cap (2), a quartz tube (3), a sample box (4), a paper tube (5) and fillers (6); the steel cap (1) is arranged on the top of a sampler and is bonded with fillers (6) through a binder; the aluminium cap (2) is connected with the steel cap (1) to fasten the quartz tube (3); and the quartz tube (3) is sleeved on the top of the sample box (4). The utility model has the advantages of meeting the production requirement, taking out qualified oxidized samples from the high oxidation molten steel, guaranteeing the converter terminal point components to be qualified and increasing the deoxidizer feeding quantity in the conventional sampler according to the molten steel oxidizability of the pipeline steel.