Sinuses can be divided into maxillary sinus, sieve sinus, frontal sinus, pterygoid sinus, each sinus is the left and right one, the location is different. 1. Maxillary sinus: located in the maxillary body, is the largest sinus, irregular triangular vertebral shape. 2. Sieve sinus: also known as the sieve labyrinth, located in the nasal cavity outside the upper sieve bone, that is, the upper part of the lateral wall of the nasal cavity and the orbital cavity between the anterior base of the skull, before the pterygoid sinus before the honeycomb airspace, the sinuses of the anatomical relationship between the most complex. 3. Frontal sinus: located between the inner and outer plates of the frontal bone, one on each side. 4. Pterygoid sinus: it is developed by gasification on the body of the pterygoid bone and is located in the lower, inner and posterior part of the posterior group of sieve sinuses. Sinuses are closely connected to other parts of the body, and discomfort can lead to discomfort elsewhere as well, so you should seek medical attention if you experience discomfort to maximize your quality of life.