ThermoCell oscillatory metal bath using a thermoelectric cooler, long life and high efficiency of Brushless DC motor and a 32 bit microcomputer control technology, which has the advantages of high control precision, stable running, simple operation and other characteristics. At the same time, various modules are available, free replacement, satisfy the needs of different users. ThermoCell oscillatory metal bath temperature oscillation and the two functions of the perfect combination, greatly shorten the operation time, improve the efficiency of test personnel, automation tool biological reaction samples and chemical reaction, catalytic, save the sample incubation and mixing reaction process of ideal.