This study discuss early strength development and durability of concrete, which AE water reducing agent of early strength type is used, with the replacing method of fly ash and blast furnace slag powder. According to the results, setting time is shortened in comparison with normal AE water reducing agent, compressive strength gains 5MPa before 16 hours, and as for the replacing method of mineral admixture, it shows higher value in order of replacement for fine aggregate, combination and replacement for cement. The rebound value of P type schmidt hammer shows a similar tendency to compressive strength. The rebound value, which compressive strength is more than 5MPa, shows 18, so it is thought that the use of P type schmidt hammer enables quality control related to estimation of compressive strength. AE water reducing agent of early strength type does not differ from normal AE water reducing agent in terms of durability such as length change ratio and neutralization, so there is no quality variation related to durability. As for replacement of mineral admixture, length change ratio and neutralization decreases in order of fine aggregate, combination and replacement for cement.