What evidence do you need to sue mistress?

First of all, what evidence is needed to sue San Xiao?

1. The evidence needed to sue Xiao San is as follows:

(1) Written evidence: the other party's extramarital affair was exposed, and a hastily written letter of guarantee expressing repentance, apology letter, etc. ;

(2) Electronic evidence: SMS, email or telephone recording between the other party and a third party;

(3) Video evidence: video or photos of the other party and a third party caught in bed. When collecting such evidence, we should be careful not to infringe on privacy.

2. Legal basis: Article 66 of People's Republic of China (PRC) Civil Procedure Law.

Evidence includes:

(a) Statements of the parties;

(2) Documentary evidence;

(3) Physical evidence;

(4) Audio-visual materials;

(5) Electronic data;

(6) Testimony of witnesses;

(7) Appraisal opinions;

(8) Records of the inquest.

Evidence must be verified before it can be used as a basis for ascertaining facts.

Second, what conditions do you need to meet to sue Xiao San?

The conditions for suing a mistress are as follows:

1. I am a citizen who has a direct interest in this case, including property relations and personal relations;

2. If there is a clear defendant, the name and address of San Xiao can be clearly stated;

3, there are specific claims and facts and reasons;

4. It belongs to the scope of civil litigation accepted and governed by the people's court.