Excessive internet use is closely related to self⁃injurious behavior, and both can be consistently harmful to adolescents' physical and mental health. However, influencing mechanism between the two as above is relatively complex, which has become a research hotspot in recent years. This paper systematically summarizes influencing mechanism of excessive internet use on adolescents' self⁃injurious behavior by means of direct or indirect method, therein involving gene polymorphism, brain structure and function, impulse control, sleep quality, anxiety, depression, psychological resilience, social support, etc., aiming at providing theoretical basis for preventing adolescents' self-injurious behavior.

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