A novel rapid crystal growth system was conveniently constructed on the basis of the high-speed acquisition card and the Laboratory Virtual Instrument Engineering Workbench software. All growth parameters were real-time monitored and controlled to provide a stable environment with small fluctuation for crystal growth. A simple equation was derived from the solution properties to calculate the cooling curves corresponding to different growth parameters. The combination of the calculated cooling curve and our designed growth system can lead to the rapid growth of potassium dihydrogen phosphate crystal routinely. (C) 2007 Elsevier B.V. All rights reserved.