The invention discloses a glass magnesium, bamboo, wood and plant fiber composite board, which is composed of a glass magnesium bamboo, wood and plant fiber composite layer and a glass fiber mesh cloth layer or a bamboo woven mesh reinforcing layer. The characteristic is that the glass magnesium bamboo, wood and plant fiber composite layer has at least two layers, the glass fiber mesh cloth layer or the bamboo woven mesh reinforcing layer has at least one layer, and the two layers of glass magnesium bamboo, wood and plant fiber layers are placed below and above the glass fiber mesh cloth layer or the bamboo woven mesh reinforcing layer.