Practical textile-based perovskite solar cells are prepared via low-temperature solution-processing, adopting a planar heterojunction architecture on a textile substrate. Polyurethane-coating of the textile enables low-temperature solution-processing, providing a robust substrate for forming polymeric anode, hole transport layer, perovskite layer, and electron transport layer. The prototype of planar perovskite solar cells on the textile substrate exhibits a power conversion efficiency of 5.72%, with good flexibility and durability in ambient conditions. This work shows the advantages of using textile substrates in flexible and practical solar cell fabrication, which can be applied to wearable electronics.