I saw this today and it's very new. What's the problem? Is it caused by scratching or using dishwasher? What may have caused it? I always wash it with a very soft sponge, but other flatmates might have washed it in an inappropriate way. What could be the problem? How can I prevent this from happening to a new wok?
Your non-stick coating appears to be coming off the underlying metal.
The solution is to discard the wok (it cannot be saved) and replace it with a plain, uncoated carbon steel wok.
Stainless steel is a lousy conductor of heat - DO NOT (buy one).
Avoid non-stick coated woks, they cannot stand the high heat/high temperatures required for proper cooking in a wok.
Season the carbon steel like you would a cast iron skillet and avoid the dishwasher.