Watercress, also known as watercress, watercress, cold vegetable, lettuce, water mustard, watercress, etc., is a perennial aquatic herb. It is native to Europe, and it is found in many regions of my country, India and Southeast Asia. In China, Guangzhou, Shantou, and Guangxi are more cultivated. In the north, large-leaf high-quality varieties have been introduced from Europe, and they have been cultivated in dry land or soilless, and they have been developed and utilized on a large scale.