The invention mainly discloses a cloth ironing machine. The technical scheme is that the cloth ironing machine comprises a rack, an ironing mechanism, a conveying mechanism, a preheating mechanism, a sterilization mechanism and a drying mechanism, wherein the conveying mechanism comprises a putting table, cloth putting rollers and a cloth reeling roller, the putting table is provided with hanging rings, two ends of the cloth putting rollers are respectively hung on the hanging rings, one side of the cloth reeling roller is provided with a cooling roller, the ironing mechanism comprises an upper press mould, a lower press mould and an ironing table, the lower sides of the upper press mould and the lower press mould are respectively provided with a first transmission mechanism and a second transmission mechanism for driving the upper press mould and the lower press mould to be in force fit, the preheating mechanism comprises a preheating plate provided with steam holes and a water tank with an electric heater, the sterilization mechanism comprises a lamp base, a lamp holder and an ultraviolet tube with a cleaning device, the drying mechanism comprises a drying plate provided with air outlets and a warm air chamber provided with a warm air machine, and sliding wheels are arranged below the rack. The cloth ironing machine has the advantages of good ironing effect, shaping in one step, high work efficiency and less energy consumption.