Content abstract: Pine needles contain a variety of vitamins, amino acids, calcium, iron and other inorganic elements, which constitute a rich nutrient bank. Bioflavonoids extracted from pine trees play an important role in the prevention and treatment of modern cardiovascular and cerebrovascular diseases such as hypertension, hyperlipidemia and cerebral arteriosclerosis, and benefit millions of patients in clinical application. After the publication of "Pine Needle Revolution" series, the phenomenon of pine trees in parks appeared in some places. We appeal again: collect pine needles reasonably and protect pine resources!