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You should not have any ammonia or nitrite at all. If the tank was cycled, it isn't anymore. Has anything changed recently? Added fish? Changed the filter, or rinsed it in tap water? Are all fish accounted for, or are any missing? How long has the tank been set up? How are you testing (liquid or strips)?
Answers to those questions can help diagnose why the tank is going through another cycle. Reguardless, you have toxic levels of both ammonia and nitrite. Do a 50% water change as soon as you possibly can. After the change, wait a few hours and test again, and let us know the results.
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