One of the tests for diagnosing of lesions in the stomach is a gastrointestinal series. This test uses computed radiograph (CR) and digital radiography (DR) fluoroscopy equipment. Therefore, the purpose of this paper is to propose improvement of the working environment based on the results through the ergonomic evaluation with CR and DR fluoroscopic equipment in gastrointestinal examinations. Observing the operator’s inspection process, the ergonomic assessment methods, rapid upper limb assessment (RULA) and ovako working-posture analysis system (OWAS) were applied to quantify the problematic working posture. As a result, the evaluation result of the RULA of CR fluoroscopy equipment was an action level of 4, which required immediate improvement. The assessment result of OWAS was evaluated to require a managed improvement of level 2 at the start and end points, respectively. On the other hand, the evaluation result of the RULA of DR fluoroscopy equipment was an action level of 1 without a problem and excluded the evaluation of OWAS because without a problem and a sitting position process. As a way to improve the working environment, a 25cm high footrest was installed and a 40cm high support was installed at the starting point. After the improvement, the evaluation results of the RULA improved to 2 for action level. Assessment result of OWAS was evaluated as normal work positions at Level 1 at the start point improved more than before, but it was level 2 at the end evaluated the same as before.