The invention provides a preparation method of a yin tonifying and calming tablet, which is prepared from crude drugs including 75g of angelica sinensis, 57g of radix ophiopogonis, 48g of schisandra chinensis, 39g of vine of multiflower knotweed, 39g of rhizome rehmanniae, 75g of poria cocos, 18g of platycladi seed, 75g of codonopsis pilosula, 93g of concha margaritiferausta, 57g of radix scrophulariae, 57g of salvia miltiorrhiza, 39g of polygala tenuifolia, 39g of platycodon grandiflorum and 10.2g of cinnabar through supercritical extraction and microwave extraction, so that the content of ferulic acid is greatly improved. The invention also provides the application of the yin tonifying and calming tablet in preparing a medicine for restraining proliferation of mice leukemia cell, L1210 cell.