28-homobrassinolide (28-HBL) is a well-known polyhydroxysteroid plant hormone which have a protective effect in plants under various stress situations. As one of Dacheng’s novel bio-plant growth regulator, 28-HBL can induce plant tolerance to abiotic stresses including metal, temperatures, drought and salinity, etc. With high safety, high efficacy and degradable residue, 28-HBL will have more application on co-formulation and complex within plant nutrient. It can affect plant metabolism, growth, and productivity during whole plant life cycle.