To evaluate the role of salidroside on proliferation, apoptosis and invasiveness of salivary gland adenoid cystic carcinoma cells(SACC), immunocytochemical staining was employed to detect proliferating cell nuclear antigen(PCNA), caspase 3 and caspase 8 expression in SACC-2 cells. Modified Boyden chamber assay combined with laser confocal microscopy(LSCM) was used to evaluate the invasion and migration abilities of SACC-2 cells at different time point. Immunohistochemistry staining revealed that the expression of PCNA was significantly decreased(P