Through chemical modification for SBA-15 mesoporous molecular sieves, some functional groups can be introduced into the backbone of molecular sieves to improve the catalytic performance. Aluminum modified mesoporous molecular sieves show the best modified effect, for example, the hydrothermal stability and acidity of aluminum modified SBA-15 mesoporous molecular sieve improve obviously. The preparation and application status of Al-SBA-15 mesoporous molecular sieves are expounded, and the future developing direction of Al-SBA-15 is prospected.