Legal Analysis: The expenses for suing for child custody are as follows: 80 yuan. If the case is closed through summary trial or mediation, or if the plaintiff and the defendant settle the case privately, the legal fee will be halved, 40 yuan.

Legal basis: Measures for the Administration of Lawyers' Fees

Article 10 Lawyers' service fees may be charged according to different service contents, such as piecework fees, fees in proportion to the bid amount, and hourly fees. Piece rate is generally applicable to legal affairs that do not involve property relations; Charging according to the proportion of the winning bid amount is applicable to legal affairs involving property relations; Time charge is applicable to all legal affairs.

Article 11 When a law firm handles a civil case involving property relations, if the client still asks for risk agency after learning the government-guided price, the risk agency fee may be implemented, except for the following circumstances:

(1) Marriage and inheritance cases;

(2) Requesting social insurance benefits or minimum living security benefits;

(3) Requesting to pay alimony, alimony, alimony, pension, relief fund and compensation for work-related injuries;

(4) Request for payment of labor remuneration, etc.