Telephone harassment has plagued people’s daily life for years. As the data of iiMedia Research showed, the number of harassment calls in China exceeded 50 billion in 2018. One fifth of netizens implied that more than half of the calls they received are harassment calls. While 85.4% of them received harassment calls every week. The problem of harassment calls is rampant, but the solution to the problem is almost ineffective. More than 90% of the netizens express dissatisfaction with the management of harassment calls, and 43.1% even implied that they had received more harassment calls in the past years than before. In fact, the harassment calls need access to telecom operators, and as the result there are ways to deal with it. But harassment calls business involves a huge chain of interests. The scale of China call center market, supported by the sales calls and harassment calls, reached 19.02 billion yuan in 2018. Under the enormous interest relationship, more than 40% of netizens believe that the problem of harassment calls is mainly attributed to the telecom operators.