Abstract: Abstract: Effect of different NaCl concentrations and pH values on garlic growth and cell division were studied in this paper. The results showed that 0.3% NaCl could stimulate growth of the garlic shoot and root in a certain degree, and suitable pH values for garlic growth were from 6.5 to7.5; Mitotic index for prophase or metaphase in root tip cells was a little higher under low concentration of NaCl than that of normal condition; Efect of different pH values on garlic growth and cell division was not obvious; Interaction of NaCl and pH could intensify the impediment for garlic growth and cell division; Over 0.7% NaCl could cause some abnormal behavior during the mitosis, such as chromosomal bridges, tri-pole spindle and chromosome disintegration. In addition, NaCl stress could significantly affect root cell elongation.