1, interpersonal barriers caused by online dating. The interpersonal obstacles caused by computer network are mainly manifested in onlineness, interpersonal trust crisis and various communication conflicts. 2. Internet interpersonal communication may also induce various personality disorders. Because student netizens think that they are not responsible for their words and deeds, they are often very direct and frank in their words. When a person's behavior habits are formed, they may be transformed into personal personality traits and form aggressive personality. 3. There are many lies. The Internet is illusory, and no one can audit the "personal data" on the Internet. Trying to find true feelings in a world of lies is tantamount to deceiving yourself. 4. There are many traps. The internet makes communication free and convenient, and it also makes derailment more difficult to be recognized. People with ulterior motives conspire under the banner of making friends, which has caused serious social problems. 5. Low-level fun. Internet is a free world without legal constraints and moral norms. Many people are easy to indulge themselves when chatting, and low-level interests are rampant, which makes people morally bankrupt. Based on the above points, we think that the disadvantages of making friends online for middle school students outweigh the advantages. According to the incomplete statistics of UNESCO, the United States accounts for 20% of the total number of middle school students who surf the Internet for the main purpose of learning, Britain accounts for 15%, and China only accounts for 2%. This striking contrast properly shows that the self-control of middle school students is not as attractive as the Internet. For teenagers who do not fully cultivate the ability of correct judgment and independent analysis, it will affect their healthy physical and mental growth; In addition, due to the fast and convenient internet, teenagers are more detached from actual interpersonal communication and social activities, which is easy to make teenagers feel indifferent and cause a state of "self-isolation"; In addition, the network is a "virtual society" after all, and the contrast with the real society will affect the survival ability of teenagers in real life. Network information is mixed and flooded, and junk information has an impact on students' comprehensive quality; Network communication has become an important factor to induce students' conflict and anomie in outlook on life, world view and values, such as virtual online dating, which makes inexperienced students deceived. In recent years, there are countless cases of crimes and persecution because of online dating. Have other debaters noticed the relevant reports? Even if online dating has some benefits, it should be divided into different periods, ages and stages. Our middle school students' main task is to study, isn't it? Everything should revolve around learning. When we talk about making friends, we need to make sincere friends, and it takes time and energy to make real friends. Won't this affect our study? But if you take a relaxed and casual attitude, don't spend time and energy, and don't devote yourself to it, how can you make sincere friends? ) 4. There are many people who are deceived and even hurt by online dating. What do these phenomena mean?