Margin ratio refers to the ratio of margin paid by investors to the amount of margin financing and securities lending, which is divided into margin financing ratio and margin lending ratio. Margin ratio refers to the ratio of the margin paid by investors to the financing amount when they buy securities through financing.

The calculation formula is: the ratio of margin financing and securities lending = margin/(the number of securities purchased by financing × the purchase price) ×100%; The margin ratio of securities lending refers to the ratio of the margin paid by investors when selling securities lending to the amount of securities lending. The calculation formula is: margin ratio = margin/(number of securities sold by margin× selling price )×100%.