Evidence of cheating and cohabitation with others mainly includes:
 1. Letter of guarantee, letter of apology, etc., and written evidence of repentance when an extramarital affair is exposed and one party is in a hurry.
 2. A police record of the investigation and punishment of whoring.
 3. The materials that the unit deals with the life style of employees after verifying their extramarital affairs.
 4. Letters, short messages, emails, blogs, diaries, chat records, etc.
 5. It is difficult to collect the evidence of catching rape in bed. You can take photos and videos to obtain such evidence, but you should be careful not to infringe the right of privacy.
 6. A legal document issued by a people's court on a party's determination of bigamy.
 7. Recorded materials of the couple's negotiations on extramarital affairs.
 8. Videos or photos of one spouse and a third party making pairs, holding hands, going in and out of the room and other behaviors in public places.
 9. Witness testimony of property management personnel, neighbors, neighborhood personnel, relatives and friends, etc.
 [Legal basis] According to Article 63 of the Civil Procedure Law, evidence includes:
 （1） Statement of the parties;
 （2） Documentary evidence;
 （3） Physical evidence;
 （4） Audio-visual materials;
 （5） Electronic data;
 （6） Witness testimony;
 （7） Appraisal opinions;
 （8） Record of inspection. Evidence must be verified before it can be used as the basis for ascertaining facts.