| A sperm sorting apparatus and a sperm sorting method are provided.  The sperm sorting apparatus includes a medium chamber, a waste chamber and a sorting channel communicated with and extending along a first direction in between.  The medium chamber is configured to contain a medium solution.  The waste chamber disposed aside the medium chamber is configured to contain a residual solution after sorting.  The residual solution includes low motility sperms and/or dead sperms.  The sorting channel is configured to be inserted with a sperm sample, such that sperms in the sperm sample are sorted in corresponding to a medium solution flow from the medium chamber.  The sorting channel has first and second portions.  The first portion is closer to the medium chamber than the second portion.  A width of the first portion measured along a second direction is greater than a critical dimension, ranging from 200 μm to 400 μm. |