I consider the happy snores of a healthy pei so endearing, however, changes in snoring patterns could indicate health problems and should be addressed if they persist.
Due to their short snouts, it is common for shar pei and other brachycephalic breeds to snore. A brachycephalic dog is one that has a flat face or short muzzle/nose. If there is a change in “normal” snoring patterns, it’s a good idea to have your pei evaluated by a veterinarian as it could indicate a health issue. In general, snoring indicates that something is obstructing the dog’s airways. Other than breed-related anatomy, common causes of snoring include upper respiratory infections, allergies, fungal disease, foreign object obstructions, tumors, dental problems, and obesity. If the air is dry, a humidifier may eliminate or reduce the intensity of snoring. If you are concerned about a change in your pei's snoring, you may want to video them while snoring and make a note if sneezing, nasal discharge or bleeding is also observed so that your vet can properly evaluate.
In general, snore-prone dogs are also more likely to suffer heat stress/stroke and chronic fatigue, so they should be kept cool. Since dogs don’t have sweat glands, they regulate their body temperature by using their tongue and airway as a cooling mechanism. A partially occluded path between the nose and lungs will limit the pei’s ability to cool off and he/she will have insufficient air to oxygenate their blood efficiently.
If your pei is healthy, just enjoy their snoring cuteness and be attentive to their sensitivities. Namaste.