In order to carry out the research of adaptive optics (AO), we develop a series of continuous surface deformable mirrors (DM) based on piezo-ceramic actuator, and the controllable number of the actuators of each DM is 21, 97, 137 and 961, respectively. Many in-and out-door AO correction experiments are carried out, in which the DM is used as the wavefront corrector of the AO system, and the experiments reach the expectation. With the 137-element AO system for the 1.23-m telescope, the close-loop correction of the 0.2″ binary star is attained, which approaches the diffraction limit of the 1.23-m telescope at 700~900 nm band. The basic structures of the DM, the testing of each main parameters and key performance of each DM are presented. The applications of each DM in the AO system are also showed. The development and application progress of the DM are presented.