The study aims to test the effectiveness of the professional intervention program to develop positive thinking skills using the positive casework among expatriate female students at the university campus. It is applied to a sample of (15) expatriate female students. This study belongs to the quasi-experimental studies and relied on the quasi-experimental approach using the pre-post design for a single group. It also relies on applying the positive thinking skills scale (prepared by the researcher herself). The results of the study prove the effectiveness of the professional intervention program using the positive casework in developing positive thinking skills among expatriate female students at the university campus regarding the following skills: positive self-talk, positive expectation, self-leadership for positive thinking, problem solving, and decision-making. The study aims to test the effectiveness of the professional intervention program to develop positive thinking skills using the positive casework among expatriate female students at the university campus. It is applied to a sample of (15) expatriate female students. This study belongs to the quasi-experimental studies and relied on the quasi-experimental approach using the pre-post design for a single group. It also relies on applying the positive thinking skills scale (prepared by the researcher herself). The results of the study prove the effectiveness of the professional intervention program using the positive casework in developing positive thinking skills among expatriate female students at the university campus regarding the following skills: positive self-talk, positive expectation, self-leadership for positive thinking, problem solving, and decision-making.