Based on the principle of the indentation method， a test method for the ultra-early elastic modulus of concrete was proposed. The size of the specimen was designed by numerical analysis method， and the spherical conical indenter with a cone angle of 30° was selected as the test indenter for the ultra-early elastic modulus of concrete， the optimal indentation depth was 5 mm. Comparing with the ultrasonic method， the method was verified by changing the water-binder ratio of concrete and the amount of fly ash . The initial setting time is taken as the zero point and the earliest elastic modulus that can be measured by the traditional stress-strain method as the end point， the two-point line is used to predict the super-early elastic modulus of concrete. To compare with the experimentalresults of the indentation method， the errors are all within 30%.