减小道间距和采用分区恒角速度技术实现了第一代磁光盘到第二代磁光盘的飞跃。坑缘记录方式、超高磁分辨技术、短波长激光二级管和直接改写技术的应用，将使下一代磁光盘的存储容量和数传率成倍增长。本文介绍最新的磁光记录技术，估计其对光盘存储容量和数传率的增长程度，并预测磁光盘存储容量的发展趋势。 Reduce the road spacing and the use of partitioned constant angular velocity technology to achieve the first generation of magneto-optical disk to the second generation of magnetic disc leap. The application of pit-edge recording method, ultra-high magnetic resolution technology, short wavelength laser diode and direct overwrite technology will double the storage capacity and data rate of the next generation of magneto-optical disks. In this paper, the latest magneto-optical recording technology is introduced to estimate the growth rate of optical disc storage capacity and data transmission rate, and to predict the development trend of magnetic optical disc storage capacity.