The purpose of the study was to determine the effect of the theory-centered curriculum using health belief model and social support on physical activity in women aged 30- 54 with high body mass referring to Shiraz, Iran. Mid-aged women (30 to 54 years old) with high body mass are covered by middle-aged care programs at health centers in Shiraz in 2017, where they have case records. Inclusion criteria: female sex; age range 30 to 54 years old; 30 ≥BMI≥ 25 in overweight; fourth grade primary and higher. Non-inclusion criteria: pregnant women; any underlying disease with limited musculoskeletal, skeletal, normal and bodybuilding degree of obesity grade one, two and three; unwillingness to participate. Exit criteria: pregnancy occurrence in women with a history of previous abortions or early delivery; no attendance at training sessions; more than one session or tests; withdrawal from the study for any reason; including illness or withdrawal of the subject during the intervention. Sample size: Each group Intervention and comparison of 40 people and a total of 80 interventional subjects. After random allocation of subjects in two groups of intervention and comparison, the questionnaires were available to the subjects at the first session by the researcher and after completing them (pre-test) The data were analyzed and based on the results, the educational needs of the intervention group were determined and based on it the content of the training program and the number of meetings will be set. It is anticipated that educational intervention will be implemented in 4 weeks and the intervention group will be divided into four groups. It is estimated that the training program for each intervention group consists of 6 sessions of 60 minutes each with 2 times a weekly frequency and using direct methods such as interactive lectures, group discussions, role play and practical training and indirect methods with educational materials such as pamphlets, poster and educational pamphlets will be delivered by a health education researcher and a physical education expert. Alternatively, the duration of the training sessions may be increased based on the capacity, the willingness, the conditions and the views of the participants in the classroom and other factors. During the intervention period, coordination centers were established so that the intervention group, other than the training, did not receive comparative training in the form of this study and the group. Intervention time: 4 weeks Initial Outcome: Physical Activity Behavior