In order to meet the demand for rockfall protection range of station yard expansion， on the basis of the existing rock shed protection measures， a new combination structure of rock shed and rockfall embankments is proposed. The bottom of the structure is the existing rock shed or the new portal foundation， and the upper part is the anchor cable ribbed wall. According to the force analysis， the calculation formula of stability safety coefficient of the new combination structure of rock shed and rockfall embankments is established. The dynamic response of the rockfall impacting the new combination structure is studied by ANSYS/LS-DYNA software. The results show that the new combination structure of rock shed and rockfall embankments has a high stability safety coefficient and can meet the requirements of anti-sliding and overturning stability. After the impact of falling rocks on the rockfall embankments panel， it will rebound and continue to impact the buffer layer of the top plate of the rock shed or the new portal foundation due to gravity. The combination structure can resist the impact of falling rocks on the rockfall embankments and increase the protection range of the station expansion line. It can provide effective reference significance for other similar projects.