Legal analysis: the court appointed a third party for appraisal as follows: 1. The court appointed. Provided that both parties agree to be appointed by the court. If established, the court can choose any appraisal institution. The advantage is that the court can choose an appraisal institution with high level and strong trust, which is easier for judges to grasp in the trial. Second, it was originally designated by both parties. The condition is that both parties require to go to the designated appraisal institution for appraisal. If it is established, the court must designate this institution and cannot choose freely. The advantage is that it is very fair and acceptable to both sides. Third, randomly shake the number. On the condition that both parties do not require the same appraisal institution, it shall be appointed by the court. The advantage of this is that it has a wide range of choices and is more random. The disadvantage is that although the appraisal institutions participating in the lottery belong to the appraisal scope of the same qualification category, each appraisal institution has its own expertise. If a case in a certain professional field is identified by a non-professional appraisal institution through lottery, the ultimate damage may still be the interests of both parties.

Legal basis: People's Republic of China (PRC) Civil Procedure Law.

Article 76 A party may apply to a people's court for an appraisal of the specific circumstances of finding out the facts. If the parties apply for appraisal, the qualified appraisers shall be determined by both parties through consultation; If negotiation fails, it shall be designated by the people's court.

If the parties concerned do not apply for identification, and the people's court considers it necessary to identify specialized issues, it shall entrust a qualified appraiser for identification.

Article 77 An appraiser has the right to know the case materials needed for appraisal, and may ask the parties and witnesses when necessary.

The appraiser shall put forward written appraisal opinions and sign or seal the appraisal book.

Article 78 If the parties have objections to the expert opinion or the people's court considers it necessary for the expert to appear in court, the expert shall testify in court. If the appraiser refuses to testify in court after being notified by the people's court, the appraisal opinion shall not be used as the basis for ascertaining the facts; The party who paid the appraisal fee may request the return of the appraisal fee.