Thats the Rendering Frames so you are confused or something.
I just want to Set the start and end frame of each animation some are shorter and some longer.
So how can i set the Animation start and end frame ?
do you mean the length of an animationstrip in the nla editor? that can be done by pressing N in the nla editor do bring up the settings for the selected strip. There you can set the strip and action length.
You don’t have to define the start/end frames in grapheditor/dope sheet, you simply grab the first/last keyframe to the frame you want.