Composite floor board

The invention provides a composite floor board which comprises a floor board block (10) and shackle connecting devices (11) arranged on two sides of the floor board block (10). The floor board block (10) comprises an innermost bamboo-plastic core layer (1), adhesive layers (2), wood board layers (3) and wear-resistant layers (4), the wood board layers (3) are arranged on two sides of the bamboo-plastic core layer (1), and the two wood board layers (3) are in adhesive connection with the bamboo-plastic core layer (1) through the adhesive layers (2) respectively, and the wear-resistant layers (4) are positioned on the outer sides of the wood board layers (3) respectively. The composite floor board is less prone to deforming, comfortable and durable.