Abstract: According to the investigation and research in recent years, the northern part of the beach of Rizhao Beach National Forest Park is in a state of erosion, while the middle and southern part is in a state of siltation. Besides, Wanpingkou Beach is in an erosive state. Based on the profile of the beachs before and after “Rumbia” and “Lekima”, it is considered that the typhoon is an important factor causing beach erosion and siltation. The sorting ability of the samples in the southern part of the beach of Rizhao Beach National Forest Park is better than that in the northern part, and the sorting ability of the samples in the shallow part is better than that in the deep part. The sorting ability of the samples in the middle and south of Wanpingkou Beach is better than that in the north, and the sorting ability of the samples in the middle is better than that in the shallow and deep, which provides the basis for sand throwing at the beach berm. As a result, a method of the combination of artificial beach nourishment and offshore submerged dike should be measured to protect and restore the northern part of the beach of Rizhao Beach National Forest Park and Wanpingkou Beach, with less damage in ecological environment and landscape.