From the literature survey, no published data was found regarding the topic of repeatedly heated cooking oil from Raub, Pahang. Thus this study was designed to evaluate the level of knowledge, attitude and practice of food outlet operators in Raub, Pahang morning market regarding the usage of repeatedly heated cooking oil. Food prepared from repeatedly heated cooking oil becoming a common issue in Malaysian setting. Few related articles to this topic (not focusing Raub) has been published previously also mentioning the seriousness of this practice to the health of human being. The main purpose of the food operators using repeatedly cooking oil because to saves cost. Level of knowledge, attitude and practice of food outlet operators in Raub, Pahang morning market regarding the usage of repeatedly heated cooking oil need to be improved. Many of the consumers not aware of the danger of using the repeatedly heated cooking oil. Only small portion of consumers aware of this situation. This small portion need to be changed to a bigger portion of consumers who well aware of this situation. This only can be achieved by doing campaign by health related agencies to create awareness that repeatedly heated cooking oil can cause harm to the health. Apart from these agencies, public must play a role in spreading the information to relatives, friends and family members. These spread of words can go viral if everyone aware the consequences of consuming repeatedly heated cooking oil. Prevention is better than cure.