Trading for short selling

If I sell a stock first rs110 and the LTP is greater than 110 for mis trading whole day, so can I buy it above rs110 with loss booking.

How do you think you can buy above 110 without loss? You have already sold at 110, then loss = buy price - selling price

yes you will book a loss,
and shorting means you borrow stock then sell immediately in market and at time of closing position you buy it at current price. Difference between sell and buy price is profit or loss for you.
Consider reading varsity.

thank u sir.