Halide perovskites have emerged as significant materials for the light-absorbing layer in many optoelectronic devices due to their remarkable optoelectronic capabilities. To enhance device performance for broader acceptance, it is imperative to identify novel solutions. A viable approach is the integration of carbon nanotubes (CNTs), which have demonstrated exceptional adaptability and effectiveness. In these devices, carbon nanotubes (CNTs) fulfill many roles, such as supplying conductive substrates and electrodes, as well as enhancing charge extraction and transport. The forthcoming generation of photovoltaic devices, metal halide perovskite solar cells (PSCs), presents significant potential. Despite substantial advancements, concurrently attaining optimal efficiency, stability, and affordability continues to pose a challenge, necessitating the creation of innovative materials termed CNTs, which, due to their exceptional electrical, optical, and mechanical characteristics, have attracted significant interest as prospective materials for highly efficient PSCs. The integration of CNTs into perovskite solar cells enhances adaptability, facilitating advancements in device performance and durability for many applications. This article offers a comprehensive examination of current developments in carbon nanotube technology and its incorporation into perovskite solar cells, functioning as transparent conductive electrodes, charge transporters, interlayers, hole-transporting materials, and back electrodes. Furthermore, we identified significant obstacles and provided recommendations for future improvements in perovskite solar cells with CNTs.