The invention discloses a printing ink motion controllable electrowetting display and a preparation method thereof. The printing ink motion controllable electrowetting display comprises a conducting layer, an insulating layer and a pixel wall, wherein the insulating layer is arranged on the upper surface of the conducting layer; the pixel wall is arranged on the upper surface of the insulating layer; the insulating layer is a double-layer insulating layer; the double-layer insulating layer includes a hydrophilic insulating layer and a hydrophobic insulating layer; the hydrophilic insulating layer fully covers the upper surface of the conducting layer; the hydrophobic insulating layer covers the upper surface of the hydrophilic insulating layer; in a pixel grid, the hydrophobic insulating layer exposes part of the upper surface of the hydrophilic insulating layer; the thickness of the printing ink decreases progressively from one side of the hydrophobic insulating layer to one side of the hydrophilic insulating layer; and after the voltage is applied, the printing ink is cracked at the most thin part, and contracts from one side of the hydrophilic insulating layer to one side of the hydrophobic insulating layer so that effective control of the cracked position of the printing ink and the printing ink motion contraction direction when an electrowetting display pixel unit is powered up.