This paper covers in natural disaster specific in flood. Due to flood is a type of hazard that affects more people as it was evidently shown in the disaster of Thailand, Philippines Indonesia, Cambodia and Loa every year. Flood is affected to people, economic and social as a result of flood disaster in Thailand and Philippines in 2011, consequence toward ASEAN community in 2015. It aims to study the effective and efficiency of disaster management communication in ASEAN. Positively, 10 countries have representative in both ASEAN Disaster Committee (ACDM) and AHA Center to exchange, share and allocate information necessary for prevention, preparedness and recovery. International organizations such as UN – ESCAP and ADPC are also supporting them with knowledge in that category. From the data collected from ACDM AHA Center, ADCP and CDP, the research found that ASEAN just established AHA Centre to work on information and deal with communication center among membership, it have effective flood hazard management but there are different communication process in national country. For example caused initially by the flood prediction from any country such as Thailand has painfully learned from flood disaster. The communication deficiency in Thailand at that time is partly the result of the lack of prevention and preparedness. Philippines, just the opposite, have more experience, and its communication was effective enough to prevent and prepare for flood disaster in 2011. Nonetheless, politics and bureaucracy in both countries have affected the management of flood crisis as well as flood communication management.