The authors selected six different flooring materials to study bending performance test methods to establish a wood-plastic flooring reference standard.They established a test formula for each kind of flooring,and set the span at 300 and 400 mm,to evaluate the effect.The results showed that when the span was 400 mm the bending deflection increased while the maximum carrying capacity was reduced.The span had little influence on bending strength,but affected the elastic modulus.The authors suggested that capacity and flexibility should be considered to determine an appropriate span.