Automobile insurance premium income has had about 54% weight of the overall non-life insurance market in premium volume and remained the highest among all business lines in the past ten years in Taiwan non-life insurance market. Therefore, the non-life insurance companies generally offer high-quality services for the automobile insurance insureds to keep and get more automobile insurance business. But the non-life insurance companies also have to pay attention to control the claim settlement process of automobile insurance because the loss ratio has increased in late years. This paper is to study the claim settlement process, loss adjustment and the items of automobile structure commonly damaged in the loss claims of automobile physical damage insurance. This paper also analyzed several loss cases to deeply understand the loss adjustment procedures. We hope this study can assist the loss adjusters of automobile insurance increasing their loss adjustment technique to settle the loss correctly which can control the automobile insurance loss ratio effectively in the future.