"As the first stage phenomenon among extensive socio_economic aftereffects by an earthquake, this paper discusses the behaviour patterns in the Kobe earthquake on January 17, 1995. 5:46 am. in terms of relationships with seismic intensity, family structure and house-type through questionnaires mailed to the whole members of 4,849 in the Kinki Branch of the Architectural Institute of Japan. The survey finally obtained behavioural records of 2,122 (43.8%) respondents and their family (6,190 altogether) in three-time sequences: that is "during," "just after" and "30 minutes after" the earthquake respectively. The results about the behaviour patterns of the respondents show characteristic tendencies as follows: (1) in general, the types of behaviour taken at each time zone are uniquely concentrated in a few dominant behaviour among 51 alternatives, and they shift from unconscious response to damage preventing action and to securing action with the lapse of time; (2) the differences among family types and the relational positions of each member in the family cause the role behaviour of each member such as: a) in the couple with an infant, the wife takes the protective behaviour to the infant, the husband seems to pay his attention rather to the inside of their dwelling than to the outside; b) in the couple with a school_age child(ren), both husband and wife continuously show safety confirming behaviour to the family members; c) in the couple with a grown_up child(ren), the role allotment among family members is not necessarily clear; and d) in the couple without child, there is no large differences between the behaviour of husband and that of wife: and (3) there are differences between the behaviour in a wooden house and behaviour in an apartment house such as; a) in the apartment house escape from the dwelling unit and evacuation are taken just after the quake, in the wooden detached house evacuation is taken 30 minutes after the quake because residents seem to more need safety checking and confirming behaviour than the apartment house even after the quake; b) and the meanings of the selected behaviour items correspond to the characteristics of the house-types; therefore, c) disaster preventing measures and emergency training methods which have been prepared as universal manuals seem to be revised by the each house-type."