In recent years, the elastic modulus value of concrete has attracted more and more attention, and it is an indispensable indicator in calculating the deformation of reinforced concrete, crack propagation, temperature stress and estimating the prestress loss. Testing the elastic modulus of concrete materials by the traditional static load test method is troublesome, time-consuming, not representative and difficult to comprehensively detect. We use the method of on-site non-destructive testing to test the elastic modulus of concrete structures and materials. The above problems are better solved.