Hepatitis C is affected by human behaviors especially drugs , diets ,activities smoking , sexy behaviors and alcohol , so it is very important to change health behaviors by patient to control of disease and avoid complications . Objective : to assess the effects of health behaviors on liver function among hepatitis C patients .Setting :The study was carried out in the Chronic Liver Hepatitis Center in Alwatany hospitalization in Lattakia province.Subjects::Thesample comprised 40 patients chosen randomly from the two genders who have hepatitis C out in the chronic liver hepatitis center in Alwatany hospitalization in Lattakia province during the research time. Tool :Data were collected using the following tools:Tool I Questionnaire: It was developed by the researcher and include items related to: demographic patients data , clinical data , questions about ( patients , information of disease , risk factors, healthy behaviors : (diet – treatment regimens – activities and habits)) Tool II : Liver function assessment sheet by using Child Pugh scale.Tool III :Patientcompliance check list which include questions about complianceGuidenceProshor.guide line has been developed by the researcherThe patients participated in 3 sessions .Each session (45minutes).Results: liver function were advanced of patient at the experimental group which applied the guide line more than patient at the control group because of Appling guide line .Recommendations : Chronic Liver Hepatitis Centers have been containing proshorsshow the impact of these health behaviors on the liver work and performing their functions as normal.