Component detection device for molten metal

The utility model relates to a component detection device for molten metal. The device comprises a sampling rod system, a pulse laser, an optical path system, a spectrum detection device, a time sequence control unit and a spectrum analyzing unit, wherein the sampling rod system comprises a sampling rod and a driving device which drives the sampling rod to move; a time sequence signal of the time sequence control unit sequentially triggers the driving device, the pulse laser and the spectrum detection device; the driving device drives the sampling rod to be inserted into the molten liquid to sample, and the pulse laser transmits pulse laser which is focused to the surface of the sampling rod through the optical path system; plasma signals generated are collected by the optical path system and led to the spectrum detection device; and the spectrum detection device obtains spectrum information and sends the spectrum information to the spectrum analyzing unit, so as to analyze real time component information of