Abstract: Current acceleration methods are not adequate for the interaction design of transfer functions.In order to resolve the conflict，a new volume rendering acceleration algorithm，the edge cutting acceleration algorithm（ECAA），is proposed．To overcome the two key difficulties，which are，firstly，how to eliminate the dependency on transfer function adjustments and，secondly，how to determine the empty range of voxels，ECAA has established a set of identifying rules for absolute idle voxels and designed an effective separating mechanism for marginal idle voxels.These have structured a new acceleration mode independent of transfer function adjustments.ECAA evidently has upgraded the rendering speed，and at the same time，kept a high rendering quality.The edge cutting procedure of ECAA is in the pre-processing phase and its parameter selection is very easy.So ECAA is of extensive adaptability and very appropriate to the applications of popular medical image analysis systems，which demands interacted transfer function adjustments.With normal cutting mode of ECAA，in next steps，shrunk volume data are highly convenient for using ray casting or splatting algorithms and combining with other acceleration techniques，so as to reach an integration of acceleration effects with different characteristics.ECAA is a good complement to other acceleration techniques.Different practical examples have presented the validity and advantages of this algorithm.