Perovskite solar cell is a thin-film cell made from solution process including coating, sintering, crystallization, and then encapsulated to become a solar cell that can generate electricity at low cost. At present, the power conversion efficiency of laboratory-produced small cell ( < 1 cm(2)) is higher than 25%. Perovskite solar cell is recognized as the next-generation solar cells. However, manufacture technique of large-area Perovskite solar cells is disclosed very few. We developed an innovative low-cost Perovskite solar cell manufacturing machine (MK-20), using once-through process which can continuously carry out thin-film coating and fast heat treatment for four thin layers. We present the design of slot-die coater and fast thermal processor (FTP). The manufacturing process is fully automatic and can make small-quantity sample production with good uniformity and high yield rate. The largest area which can be produced is 80cmx80cm. The maximum production rate is about 6 cells per hour. For a typical p-i-n type Perovskite cell, the trial run on this machine achieves 14.3% power conversion efficiency which is about 77% of small cell produced by spin coating and hot plate annealing. This machine is able to manufacture various kinds of Perovskite cells with different chemical composition having similar fluid properties of Newtonian fluid. Some key technologies in large-area Perovskite cell production are found and also presented.