If the bug is small and not deep in the nose, it can be blown out by blowing the nose. If the bug is large or deep in the nose, tweezers or a suction device will be needed to remove the bug. 1. If the bug flies into the nostril is relatively small and the bug is close to the outside of the nose, you can press one side of the nose and blow your nose to get the bug out of the nose. 2. If the bug is large or in the deep part of the nose, you need to remove the bug with tweezers under the endonasal microscope. If the bug still continues to crawl to the deep part of the nasal cavity, you can spray the nasal cavity with anesthetics, and then use tweezers to take out the bug after the bug has been anesthetized. In addition to this, the bugs can be sucked out with a suction device. In addition, the bugs into the nasal cavity can also be cleaned with saline, which is also helpful to rinse out the flying insects from the nasal cavity. It is recommended that the location of flying insects in the nasal cavity is deeper, and you need to consult a doctor in time, and you have to follow the doctor’s instructions for treatment.