The purpose of this study were determine relationship between Health belife model and Modifying factor were population factor and Social support to practics of patients at the out patient Medicin Department a Taksin Hospital. The independent variables population factor were sex

age

marriage status

education level

income

occupation. Health belifes were perceived susceptibility

Perceived severity

perceived benefits and cose

motivation. Modify factor were first social support and secondary social support. Samples were obtained from a sample random sampling. There were consisted of 365 patients aged 15-60 years and they were interview completly. Data were collected by structored interview. The analysis was done by using (...)(2) distribution. The results were as follows : The factors relating significient level at .05 to practices were : age

education level

occupation

perceived susceptibility

perceived benefits and cose. The factors were not relating to practices were marriage status

income

perceived severity

motivation

first social support

secondary social support.