Abstract: Cryopreservation is an effective method for conserving germplasm of Oryxa species. Cryopreservation of tissue cultures of rice is usually influenced by some factors, such as material properties, cryoprotectant, freezing procedure, treatment after freezing and renewing culture. The principles and effect factors of cryopreservation were introducsd and the latest researches of cryopreservation on tissue of riceeas reviewed.