According to the identification standard of human injury degree, simple nasal bone fracture is only a minor injury, which constitutes a minor injury and should be punished according to the Public Security Administration Punishment Law.

Legal objectivity:

Article 43 of the Law on Public Security Administration Punishment stipulates that those who beat others or intentionally hurt others' bodies shall be detained for more than five days and less than ten days, and shall be fined between 200 yuan and 500 yuan; If the circumstances are minor, they shall be detained for not more than five days or fined not more than five hundred yuan. Under any of the following circumstances, he shall be detained for not less than 10 days but not more than 15 days, and shall be fined not less than 500 yuan but not more than 1,000 yuan: (1) beating or injuring others in a gang; (2) Beating or injuring a disabled person, a pregnant woman, a person under the age of 14 or a person over the age of 60; (3) Beating or injuring others for many times or beating or injuring more than one person at a time.