Willows disinfectant is not effective in killing novel coronaviruses. The Pneumonia Treatment Protocol for Novel Coronavirus Infection (Trial Version 5) states that fat solvents such as ether, 75% ethanol, chlorinated disinfectants, peroxyacetic acid and chloroform can effectively inactivate the virus. Many people think that as long as the disinfectant contains chlorine, it is a chlorinated disinfectant, but the main active ingredient of Willows disinfectant is p-chloro-m-xylene phenol, which is actually a phenolic disinfectant, although it has chlorine in its name. At present, there are 84 disinfectant solution, chlorine disinfectant powder, chlorine effervescent tablets, bleach and other commodities that can be bought in China, which need to be used correctly according to the instructions for use in order to disinfect effectively.