Abstract: The problems of fire investigation module of existing fire supervision system are analyzed. Combining with the usage of fire investigation module of fire supervision system as well as the fire investigation situation and task, the design idea of fire investigation integrated platform based on multi system interaction is put forward. The fire investigation integrated platform design principle and target are summarized. The overall structure, application structure and data structure is introduced. The subsystems are introduced, including case handling system, on site recording system, material evidence system, etc.

Key words: multi system interaction, fire investigation integrated platform, fire investigation