Marital investigation: The items of marital investigation are all related to marriage, such as premarital investigation, divorce evidence collection, marriage rescue, marriage maintenance, separation of third parties, evidence collection of third parties, and some other cases related to marital emotions. Under the client's commission requirements, the work is completed in a targeted manner. Lawyers cooperate and collaborate to ensure the accuracy of evidence and the completeness of legal links, making the client's work twice as effective with half the effort. When marriage investigation companies first emerged in 2000, they played a supervisory and predictive role in marriage. They could handle emotional rescue and family crisis management very well, so as not to wait until problems became serious and then focus on them, maintaining the family and preventing it from being harmed by an inappropriate emotional infidelity. From a legal perspective, the direction of marriage investigation companies is to protect families and prevent external emotional crises. The contemporary significance of marriage investigation companies.

The arrival of the stable period of the detective agency industry has gradually stabilized and gained partial recognition from society. The functions of detective agencies are also undergoing transformation along with the current business changes. The technology and network of detective agencies have reached an unprecedented height. The original emerging industry is gradually maturing and welcoming better social recognition.

At present, there is no legal concept of "extramarital affairs". We believe that "extramarital affairs" refer to certain behaviors that violate the duty of fidelity stipulated in Article 4 of the Marriage Law and involve varying degrees of physical contact between married individuals and the opposite sex other than their spouses. Shenzhen Gaoge Investigation holds that, in a broad sense, extramarital affairs should be classified into four degree levels:

1. Ambiguous relationship, that is, the relationship between a man and a woman goes beyond the level of ordinary friends, but there is insufficient evidence to determine exactly how far it has gone.

2. Extramarital sexual behavior, that is, sexual activity between a man and a woman.

3. Cohabitation, where both the man and the woman have been living together in a common lifestyle.

4. Bigamy refers to the situation where a man and a woman have been living together stably under the guise of being husband and wife or in the appearance of being husband and wife.