To quickly collect safety information or the like concerned with members in a group without increasing communication traffic volume on the occurrence of an event such as disaster and to grasp the situations of the members.

The information collection system is provided with a safety information storage part 8 for generating an interface for receiving the safety information of members 4 on the occurrence of disaster and registering the safety information of the members 4 received through the interface, a registration instruction sending part for extracting a member 4 whose safety information is not registered in the safety information storage part 8 after the lapse of prescribed time, generating a registration instruction for urging the member 4 to register the safety information and transmitting the registration instruction at least to the member 4 himself and a registration existence output part for outputting whether each member 4 has registered the safety information or not on the basis of the registration in the storage part 8.