Several prominent conductive polymers such as PTAA possesses appealing photoelectric properties suitable to be adopted as the hole transporting materials in perovskite solar cells aiming for elevated performance. Unfortunately, hydrophobic surface hampers the formation of dense and high quality perovskite films above. Moreover, the undesirable contact between carrier transporting layer and perovskite film even achieved through some approaches also induce serious carrier recombination around the interface. Meanwhile, rough surface of perovskite film gives rise to the uncomplete coverage of sequent electron transport layer deposition. Consequently, it is still challenging to acheieve conformal deposition on hydrophobic carrier transporting layers to obtain excellent device performance. In this study, anchoring engineering utilizing PbI2 is demonstrated to be a facile, green and effective approach to solve the problem of wettability of hydrophobic carrier transport layer. By this method, the quality of perovskite film and the performance of the device are greatly improved, and devices which the efficiency is as high as 19.53% was obtained. At the same time, this method is also generally applicable to other hydrophobic carrier transport layers to prepare excellent perovskite films, offering a promising strategy for the development of high performance perovskite solar cells.