This study was designed to test the effects of hostility and commitment on anger and blood pressure in a hostile social context. High and low hostile 90 male undergraduate students, based on Cook and Medley Ho scale score, were randomly assigned to three experimental conditions based on commitment level. The major findings of the present study are as follows: High-hostility mal效 attribute co-worker's actions to be more on purpose and experience much more anger, and react with a higher diastolic blood pressure than low-hostility males. In systolic blood pressure, the higher the commitment level, the higher the systoloic blood pressure. But expected interaction effects (hostility * commitment) are not significant. Implications of the results of the present study are discussed in relation to previous researches.