Abstract: The big parameter and multi-subsection of sublevel caving method without sill pillow combines the Caving method with the advanced theoretic and technic.Its characteristic are bigger structural parameters,undiluted ore drawing and muti-subsection parallel mining.Adopting these technic at the same time,it can get the best economic and technical results and will reduce the ore's loss,improve the industry's output,cut down the charge of the produce.So if the natural condition is permitted,we should try out best to popularize this method to get the best aim.