Cleaning is an important procedure in the conservation of paper relics. This work studied the application of the siphon technique in cleaning of paper relics. This new technique can prevent undesirable abrasion and mechanical damage during cleaning and is especially suitable for the cleaning of fragile paper artifacts and paintings or calligraphies with poor color fastness upon rinsing. This technique can reduce the possibility of contamination caused by circulation using the traditional method of rinsing. The technique can also improve the effectivness of cleaning. The brightness and glossiness of the washed artifacts remained unchanged. The pH values increased to 8. 5 after siphon cleaning. It provides an alternative way for conservators to wash the paper - based artifacts.