Disaster preparedness efforts are not only carried out by the government, the community also needs to carry out disaster preparedness in order to reduce losses due to disasters. Disaster preparedness can be defined as efforts that enable governments, organizations, communities and individuals to respond quickly and effectively to disaster events. Preparedness efforts for each individual or group are not the same depending on the level of disaster preparedness which is influenced by socio-demographic factors, social networks, and previous flood experiences. The level of knowledge about disaster preparedness that each individual has is different so that it will cause various responses when individuals face emergencies due to natural or non-natural disasters.natural. A good level of knowledge will contribute to creating a sense of security and minimizing disaster victims. In this case, the community already has the initiative in dealing with the threat of disasters, especially floods. These efforts are manifested in various forms of activities. Starting from public awareness, mapping disaster-prone areas, making and preparing evacuation routes, flood early warnings, forming disaster preparedness groups and so on. This thesis aims to determine the relationship between family knowledge and preparedness to face flood disasters in Gampong Rambong Pinto, East Woyla sub-district. This type of research is descriptive analytic with the research design used is a cross-sectional study, with a sample of 30 families. Data analysis includes univariate analysis by looking for the frequency distribution, and bivariate analysis using chi-square test with a significance value (α= 0.05). The results showed that there was a relationship between knowledge and disaster preparedness with a p value of 0.035 (p < 0.05). It is suggested to Health Officers in the working area of ​​Woyla Timur Health Center, West Aceh Regency and also BPBD officers to further improve health promotion about the importance of preparedness efforts to face flood disasters.