This is a fully automatic mobile helium mass spectrometer leak detector, featuring a simple structure and superior performance, suitable for a wide range of industries. It boasts a unique gas path design that prevents dust from entering the instrument; multi-mode function input and output for easy connection to various automated equipment; a dual iridium ribbon ion source with strong oxidation resistance and long service life; and effective separation of mechanical and electrical components to avoid mutual interference from temperature, electromagnetic fields, etc., ensuring more stable and reliable operation of the leak detector.