Use a cherry stoner, available from most kitchen shops. First remove the stems from the cherries. Place them one at a time and with the stalk end uppermost on the base of the cherry stoner, then close the plunger to push out the cherry stone. Alternatively, you can use the point of a knife to split the fruit and carefully praise out the stones.
Besides, you might also want to stone cherries inside a clean, plastic bag to prevents the cherry juice from splashing over the work surface or your clothes.
** Asian Online Recipes