The microcomputer temperature & oxygen measurement instrument is combined with many years` on-site experiences and references to the advantages of similar foreign advanced products. The host is equipped with a INTER 80486 processor, ISO case, and color TFT or LCD display. The instrument can be equipped with a large screen display, a standard port to connect a color or B&W printer, and a standard port to output analog and digital signals. The instrument can also be equipped with quick temperature measurement thermocouple and quick oxygen measurement probe for measurement of the molten metals. The measurement curve can be dynamically displayed in the measurement, and stored for later analysis and reference.