sriramssr and Trykon,Originally posted in cdnusers.org by watchdog1976
i have tried in this way, it is ok now.
setup / drawing option / display / filled pads,
if uncheck filled pads, pin number can be displayed.
thus, Sriramssr said is right. pin number is too small, if closed filled pads, then pin number can be seen.
thanks all of your help.
allen from china.