Beta lipoprotein is a type of lipoprotein family that usually plays an important role in the packaging, storage, functioning and metabolism of extracellular lipids in the body. Beta lipoproteins have an inner core rich in sterol lipids, triglycerides, etc., which are hydrophobic, while the outer shell consists of proteins, phospholipids, and cholesterol, etc., which together form the globular particles that are beta lipoproteins. Lipoproteins are very important for mammals, and they play an important role in the packaging, storage, operation and metabolism of extracellular lipids. Abnormalities in lipoprotein metabolism, i.e. changes in lipid and protein fractions, may lead to atherosclerosis, diabetes, obesity and tumorigenesis. Consultation with a clinician is recommended for specific questions.