Can the same law firm represent both the original defendant and the defendant in the same case?

This kind of institution is illegal. According to Article 27 of the Measures for Punishment of Illegal Acts of Lawyers and Law Firms, it is illegal for a law firm to "accept cases with conflicts of interest in violation of regulations" as stipulated in Item 5 of Article 50 of the Lawyers Law under any of the following circumstances:

(1) Entrusting our lawyers to act as agents of the plaintiff and defendant in the same litigation case, or as defenders of the defendant and agents of the victims in the same criminal case;

(2) Failing to examine the conflicts of interest in the entrusted matters in accordance with the provisions, and at the same time or successively appointing lawyers as agents or providing relevant legal services for the parties involved in non-litigation legal affairs with conflicts of interest;

(three) knowing that lawyers and their close relatives have conflicts of interest with the entrusted matters, they still entrust lawyers as agents, defenders or provide relevant legal services;

(4) conniving at or letting our lawyers commit the illegal acts stipulated in Article 7 of these Measures.

At the same time, according to Article 50 of the Lawyers Law, if a law firm commits one of the following acts, the judicial administrative department of the people's government at the municipal level or municipality directly under the Central Government shall give a warning according to the circumstances, suspend business for rectification for more than one month and less than six months, and may also impose a fine of less than 100,000 yuan; Illegal income, confiscate the illegal income; If the circumstances are particularly serious, the judicial administrative department of the people's government of a province, autonomous region or municipality directly under the Central Government shall revoke the practice certificate of the law firm:

(1) Accepting entrustment or charging fees in violation of regulations;

(two) in violation of legal procedures to change the name, person in charge, articles of association, partnership agreement, domicile, partners and other major issues;

(3) engaging in business activities other than legal services;

(four) to slander other law firms, lawyers or pay referral fees and other improper means to undertake business;

(5) Accepting cases with conflicts of interest in violation of regulations;

(6) Refusing to perform the obligation of legal aid;

(seven) providing false materials to the judicial administrative department or committing other fraudulent acts;

(eight) dereliction of duty in the management of lawyers in this firm, resulting in serious consequences.

If a law firm is punished for the illegal acts mentioned in the preceding paragraph, it shall give a warning or a fine of less than 20,000 yuan to the person in charge, depending on the seriousness of the case.