The remarkable efficiency achieved by metal halide perovskite solar cells (PSCs) has established them as a significant advancement in thin-film photovoltaic technology in recent years. However, the susceptibility of halide perovskite to degradation under aging stressors presents a substantial impediment to their commercial viability. Leveraging attributes such as structural design flexibility, precise functional control, an abundance of functional sites, and a combination of rigidity and flexibility, crystalline porous materials (CPMs) have emerged as promising additives and interfacial modifiers. CPMs play a pivotal role in influencing perovskite crystallization, defect passivation, filtering of ultraviolet photons, and the adsorption of leaked Pb(II) ions, garnering increasing attention within the PSC research community. In this review, we systematically categorize and assess the multifaceted functions of CPMs within various functional layers of PSCs, encompassing the charge transport layer, perovskite heterojunction, and the perovskite/charge transport interfacial layer. Additionally, we conducted an extensive literature data analysis to categorize the specific roles of CPMs across these functional layers and investigated their correlation with device photovoltaic parameters. Finally, we present conclusions and offer insights into the future prospects of CPM-based PSCs. This timely review provides a distinctive perspective on the field and promises to yield valuable insights for the ongoing development of these promising materials.