In theory, there is a possibility of trying to obtain information related to computer data processing by analyzing power line signals, but in practice it faces many challenges and limitations. The power line itself will carry various electrical noise and interference. The electrical signal characteristics generated by the data processing process inside the computer may be obscured by these messy background signals. It is not easy to accurately extract and analyze useful data signals. However, in some extreme cases or in specific environments, if special measures are taken to reduce interference and advanced signal processing technology and equipment are available, it is extremely possible to analyze the weak computer-related signal characteristics remaining in the power line signal, but this usually requires professional technical capabilities and specific conditions.And highly targeted attack scenarios, and this kind of eavesdropping is seriously illegal and violates the principles of information security. Overall, although there are potential theoretical risks, it is very difficult and uncommon under normal circumstances to achieve reliable computer data processing based on power line signals.