If I use a credit card for daily spending, and pay in full every month does this help or hurt credit score?

• transfer credit card balance
• credit card consolidation loan
• debit credit machine
• building iphone apps
• a ucas points

I use my debit card for stuff like monthly bills, but I use my credit card to pay for stuff like food, gas, entertainment, every day little things like that. Used to always use a debit card for everything. Wife suggested using credit card for everything because she claims it will be better for my credit score as well as building reward points. So are there advantages to this new strategy? Disadvantages?

If I use a credit card for daily spending, and pay in full every month does this help or hurt credit score?