Biological fulvic acid, also known as fulvic acid, is extracted from plants bodies, weathered coal, peat, etc, using special bacteria biological fermentation and chemical treament technology. It is a kind of short carbon chain molecular material extracted from natural plants, with high loading capacity and physiological activity. Fulvic acid contains small molecule aromatic carboxylic acid chemical compounds, its main components containing fulvic acid, amino acid, trace element, etc. It also contains biological active substances and plant endogenous hormone including nucleic acid, salicylic acid, carbohydrates, indole acids, collagen, etc.