That's not very illuminating.
How many icons? What are they? Where are you putting them? Where do they end up after you Restart?
Most icons on your Desktop should reappear in the same place you left them before shutting down. Some will revert to a "default" location, and there's nothing you can do about it. (at least not easily)
See this thread
https://forums.macrumors.com/threads/882026/