There are two situations that cause minor injuries: if the appraisal result is minor injuries, the public security organ shall file a case for investigation and investigate the criminal responsibility of the hitter. According to the provisions of the Criminal Procedure Law, the term of criminal detention generally does not exceed 14 days, and the longest is not more than 37 days. If the conditions for arrest are met, the person will be arrested and detained for investigation. If the public security organ refuses to file a case, it may file a criminal private prosecution with the people's court and demand that the criminal responsibility of the hitter be investigated. As for the length of the court session, it depends on the specific circumstances of the case and the number of cases in the court. Under normal circumstances, for cases of intentional injury and minor injury, if the evidence is sufficient, you can go to court in about three months. Article 202 of the Criminal Procedure Law stipulates the time limit for the court to conclude a case. When trying a case of public prosecution, the people's court shall pronounce a judgment within two months after accepting it, and no later than three months. For a case that may be sentenced to death or an incidental civil lawsuit, if one of the circumstances stipulated in Article 156 of this Law occurs, it may be extended for three months with the approval of the people's court at the next higher level; Due to special circumstances need to be extended, it shall be submitted to the Supreme People's Court for approval. The people's court shall conclude a case that is tried by summary procedure within 20 days after accepting it; If the possible fixed-term imprisonment exceeds three years, it can be extended to one and a half months. Legal basis: Article 202 of the Criminal Procedure Law of People's Republic of China (PRC). When trying a case of public prosecution, the people's court shall pronounce a judgment within two months after accepting it, and no later than three months. For a case that may be sentenced to death or an incidental civil lawsuit, if one of the circumstances stipulated in Article 156 of this Law occurs, it may be extended for three months with the approval of the people's court at the next higher level; Due to special circumstances need to be extended, it shall be submitted to the Supreme People's Court for approval.