<p>Dengue fever isa public health problem in pilangkenceng villagethattends to increase its spread due to lackof<br />families knowledgeabout prevention dengue fever. The purposeof this study is to know knowledge<br />relationship of with family attitude in prevention of dengue fever in Pilangkenceng Village, Pilangkenceng<br />Subdistrict, Madiun Regency.<br />The study design uses analitic Crosssectionalstudy. Population is allfamilies in Pilangkenceng Village,<br />Pilangkenceng Subdistrict, Madiun Regency as many as 1250families. Samples are 125families by<br />usingStratifiedrandom samplingtechnique. Data collection uses questionnaires. Independentvariable is<br />knowledge of families about dengue fever and dependentvariable is family attitude in prevention of dengue<br />fever. Data processinguseediting, coding, scoring, and tabulating. After being tabulated,data is analyzed by<br />usingMann Whitney Correlation testwith an error rateof 0.05.<br />The results of the study showedthatknowledge of family about dengue fever withgood criteria as many as<br />72respondents(57.6%), family attitudein prevention of dengue fever which is Positive is71(56.8%), whilethe<br />results of statistical test mann whitney correlation obtainedresult that there is knowledge relationshipwith<br />familyattitudein prevention of dengue fever(p=0,014 (p &lt; 0,05).<br />The conclusionsofthe studythere is knowledge relationshipwith familyattitudein prevention of dengue fever.<br />May health workers be expected to improve counseling and educational information about Dengue fever to<br />the families especially, with enough knowledge debriefing by providing examples of how to eradicate<br />mosquito breeding and cultivating the environment clean, it can reduce the incidence of fever dengue fever.<br /><br />Keywords : Knowledge, Attitude, Family, Dengue Fever</p>