As a crack grows in a specimen, the compliance of the specimen increases. This increase can be obtained by using the well-known relationship between the compliance and the stress intensity factor which has been obtained for various types of loading and specimen configuration. When the compliance of the cracked member is known, fracture mechanics can be extended to the analysis of the structure which contains the cracked member. The compliance concept is available also for the analysis of other behavior in a cracked specimen. This paper presents a method of extension of fracture mechanics to the structural analysis utilizing the compliance concept. In addition, some examples of the application are shown; (1) the structural analysis by matrix method of a cracked member, (2) the vibration of a cracked member, (3) the load carrying capacity of a cracked column, (4) the comparison between the load-controlled and the displacement-controlled fatigue tests, and (5) the application to the arrest of brittle fracture.