There is no uniform standard for trace element test for adults, different hospitals have different instruments and the items measured vary. The general trace element test is to check the amount of some important trace elements in the human body through instruments to determine the health level of the human body. The commonly used tests for trace elements include zinc, lead, copper, calcium, magnesium, iron, and iron. The methods used include molecular spectrometry, isotope dilution mass spectrometry, atomic emission spectrometry, etc. Through these trace element tests, we can understand the health status of the human body, and the sampling specimens are taken from human blood and hair for testing.