Transparent nails may be a normal physiological phenomenon, or may be caused by disease factors such as malnutrition resulting in thinning of the nail plate. 1. Physiological phenomenon: normal nails are hard, have a certain thickness, smooth and transparent surface, and can be observed through the nails to the subnail tissue. 2. Disease factors: If the patient’s intake of nutrients is insufficient, such as the lack of zinc, calcium, iron and other trace elements and B vitamins, etc., may make the body nutritional ratio imbalance, which will make the growth of the nail obstacles, the situation of thinning nails, and ultimately lead to the nails are more transparent and easy to observe the morphology of the tissues underneath the nails. It is recommended that patients seek timely medical examination to clarify the cause of the disease after targeted treatment, to develop good habits in life, pay attention to nail care and so on.