Sounds like you need French drains and a sump pump. Your not accomplishing anything if you clean the mold and build the floor up higher. The issue is you have water intrusion, which needs to be corrected. I would also be careful if there is a lot of mold and cleaning it up if you don't know what your doing, which it sounds like you don't. Sure bleach will help kill mold, but it doesn't kill the spores that get into the air or your heating/cooling system when you move it around.

I would highly recommend resolving the water and mold problem prior to doing any further work, this will eventually end up effecting the overall quality of you home and health.

I am saying my basement kind of wet, coz when I removed the carpet n going to replace a lamilate, I found that under carpet there is big stain seam got wet . and under carpet there a plywood . I could see the concrete under plywood was not dry enough,even with something white , I guess that was MOLD?

questions: 1. to fix the wet basement costs a lot,so i'm going put a certain height of something beween plywood n lamilate,can u suggest what materia i can buy from Homedeop or other store?

2.how to kill the mold between pkywood n concrete, better using smoke coz liquid (like bleach) is hard to get to higher area. thx