ADMET (absorption, distribution, metabolism, excretion and toxicity) pharmacokinetic prediction method is a very important approach in drug design and drug screening. Early studies on the properties of drugs in ADMET mainly focused on human-derived or humanized tissue functional proteins as drug targets. Combined with in vitro research techniques and computer simulation, scientists study the interaction between drugs and in vivo biophysical and biochemical barrier factors. Wondering when is the best time to conduct ADMET Prediction.