Disaster management is employing various managing by types of disasters.
Disasters can be defined as artificial disaster, natural disaster, and civil defense situation in a broad range, and are managed based on related laws and organizations.
Also, there are specified disaster types that managed and controlled under responsibilities of appointed divisions and organizations.

- Although the actual risks could be huge, sometimes they would not be recognized or felt.
- Most people are not interested in unless the disaster harms directly themselves and families.
- The level of damages and frequency of occurrences are varied by times and development stage of technology & industry.
- Explicit efforts and sound management can reduce of most of disasters.
- Disaster occurrence processes are abrupt and preserve strong impacts, and they can be varied in shape, size and impact, although they are same types.
- Hard to predict possibility of disaster occurrence and revolution of situation.
- Damage to others by both mistakes and intentions are required responsibility of compensation.