The coronavirus disease pandemic (COVID19) has impacted everyone, including adults. To contain an outbreak, accurate information about the illness, how it spreads, how to prevent it, and official alerts are essential. We assessed a subset of adult’s knowledge, and attitudes that influence clinical outcomes. Method: Andescriptive research methodology was used to evaluate adult participants' attitudes and level of knowledge regarding COVIDappropriate behavior. 19- 35 years of adults residing in selected village of Chengalpattu district was selected as sample. A sample size is 30 both male and female were selected by probability sampling techniques. Throughout the course of ten days, multiple choice questionnaires were used to collect the data. Result: From this study it shows that the level of Knowledge and attitude on COVID appropriate behaviors among adults at selected village at Chengalpattu district is 14(46.67%) of the adults were having poor Knowledge and attitude, 9(30%) of the adults were having average Knowledge and attitude and 7(23.33%) of the adults were having good Knowledge and attitude.