In CTV, due to venous filling was unsatisfactory while the technique of (MIP), multiplanar reformation (MPR) was good for demonstrating both the embolus and its nature.

The migration nature of fluid and post-reformation of petroliferous basins resulted in multi-period of migration, accumulation, pool-forming and destruction of oil and gas in geological history.

The article analyses how to improve the development of digital library by the use of copyright issues from the main nature, the advices of the reformation of copyright in advance.