In this thesis, we improve the digital optical phase conjugation ( DOPC ) based on Kitty self-pumped phase conjugate mirror ( Kitty-SPPCM ) to enlarge the power of the object light and synchronize the reconstruction light with the record of object light. Then we try to design an in-time DOPC, use the reconstructed object light to scan, reconstruct different time’s object light, and compute the other reconstruction phase distribution. The enlarged power of the object light and the reconstruction which synchronizes with the record by our DOPC, will improve the optics-related applications of biomedical field.