Alopecia areata (AA) is one of the most common and often recurring type of non-scarring alopecia. The existing treatment methods include the use of glucocorticoids, immunosuppressive drugs, photodynamic therapy, PRP injection, PUVA, etc. However, these methods have many limitations, such as requirement of long treatment cycles, adverse drug reactions, poor patient compliance etc. On the other hand, laser therapy has become one of the most commonly used methods in clinical treatment of alopecia areata due to its short treatment cycle, definite curative effect and few adverse reactions. In this article, the mechanism, clinical application and efficacy of various kinds of laser in the combined treatment of alopecia areata are reviewed. We proposed that laser or laser combined with other methods are effective and prospective treatments of alopecia areata, but there still need to be large amounts of samples of clinical trials. It is noted that therapeutic mechanism can be combined with pathogenesis to further evaluate the efficacy and safety for the disease. In brief, laser therapy is expected to become one of the most effective technology in the clinical treatment of alopecia areata.