The invention discloses a miniature electric field sensor with special-shaped electrodes, which relates to the sensor technology. A sensor sensitive structure comprises a substrate, an exciting unit, a shielding electrode, an electric field induction electrode, an anchor point and other parts. The exciting unit comprises an exciting electrode and a support beam, which are symmetrically distributed at two sides of the sensor sensitive structure; and the shielding electrode and the electric field induction electrode are arranged in staggered form, and are distributed at a middle position region of the sensor sensitive structure. The exiting unit, the shielding electrode, the electric field induction electrode, the anchor point and the like are located in the same structural layer. The miniature electric field sensor provided by the invention comprises the special-shaped electric field induction electrode and shielding electrode, thus, charge changes of the electric field induction electrode in the sensor within unit time is increased, and the sensitivity of the miniature electric field sensor is improved.