The invention discloses a method of transporting liquid drops by a micro-fluidic chip. The method comprises following steps: step one, a micro-fluidic chip is provided, the micro-fluidic chip comprises array-arranged driving electrodes, the driving electrodes are in half-moon shapes, in the fluid drop transportation direction, one edge of each electrode is in a convex arc shape, the other edge of each electrode is in a concave arc shape, and the convex arc is opposite to the concave arc between two neighbored electrodes; step two, an electric potential between 32 V and 60 V is exerted between the neighbored driving electrodes to drive the liquid drops on the driving electrodes to move. The method of transporting liquid drops by a micro-fluidic chip aims to reduce the driving voltage of a digital micro-fluidic chip, so the electric field strength of the chip is reduced, damages to the biological activity organisms contained in the liquid drops are avoided, and the use efficiency of the digital micro-fluidic chip is improved at the same time.