Abstract: Abstract: Experiment was carried out to explore the effect of compression treatment to garlic (Allium sativum L.) cloves on emergence and growth of garlic. White garlic cloves of Northeastern China were compressed at transverse and longitudinal direction to the degrees of 5%-45% and planted, the untreated garlic cloves were used as controls. The effects of different degrees of compression on emergence time, emergence rate, plant stalk diameter and plant height for cloves were investigated, and the regression models of plant stalk diameter with the degrees of compression for cloves were obtained. Correlation analysis between garlic plant height with degrees of compression was carried out. The results showed that, compared with the control, for cloves compressed at transverse direction, the compression levels of 10%-45% had significant effect on emergence time, emergence rate, plant stalk diameter and plant height (P<0.05), the treated seeds emerged earlier; the emergence rate, stalk diameter and plant height of cloves at compression of 10%-25% were greater than that of control. For cloves compressed at longitudinal direction, the compression of 10%-45% had significant effect on emergence time, emergence rate, plant stalk diameter and plant height of garlic (P<0.05); the treated cloves emerged later; the emergence rate and stalk diameter of cloves at compression of 10%-15% were greater than that of controls. It can be concluded that compression at transverse direction of clove is favorable for the growth of garlic than compression at longitudinal direction and the optimal rate of compression is 10%-25%. Regression equations of plant stalk diameter with the degrees of compression for cloves fit well (R≥0.91)with the test data, and the correlativity between the degree of compression and garlic plant height is significant (P<0.05).