You can play on a chipped reed if it's not chipped too bad. But, the damage to the reed will affect the sound. It is not advisable to use chipped reeds because in some cases, it will destroy the sound of your reed instrument or it will be completely unplayable.

It is normal for a reed to expire. Most reeds have a lifespan of 1 week to 1 month, depending on how often you use it and how well you take care of it. Reeds will most commonly chip or worse, crack, among the beginners. Chipping in a reed is one of the signs that you may need to replace your reed. 

Some players will use chipped reeds but checking the extent of the chipped area is a must. If the center of the tip is chipped, expect for a worse performance of the reed. If it is chipped in the corner, you could use it a little while longer but you might have a hard time on achieving your desired sound.

There are remedies that might help you extend the life of your chipped reed a little longer. You could re-scrape and clip the tip of your reed shorter so that the tip’s edge is sharpened. Some professional musicians practice this method. Before doing this, make sure that you are experienced enough in performing this remedy because it could cause more damage to your reed.

It is suggested that if your reed gets chipped you just replace it, especially if the reed is already cracked. Cracked reeds are considered dead reeds. A reed needs to vibrate in order to create a sound and a cracked reed will not vibrate. It is normal wer-and-tear if your reeds chip or crack over time, it just happens and is impossible to predict.

To avoid chipped reeds, always take good care of it. There are methods and techniques on how to maintain your reeds’ cleanliness and extend its lifespan. It is difficult to find a good reed so when you found a good one, you might want to make it last longer.