In manufacturing industry, especially in aviation manufacturing industry, there are many traditional cleaning methods for decontaminating all kinds of product components before assembling. But along with the restricted requirement of environmental protection, as well as the high accuracy and high efficiency, many existing cleaning technology are not suitable for it. Some new kinds of cleaning technology with environment friendly become available nowadays in ultraprecision machining domain. The laser cleaning technology is one of them. The principle and the method of the laser cleaning technology are introduced, and the application of pulse Nd:YAG laser to clean the contaminated parts is researched. The results of the experiment are discussed. Futhermore, the future of cleaning technology is predicted.