The invention discloses an electromechanical oil extraction device capable of increasing the oil extraction rate. The electromechanical oil extraction device comprises a support frame, a circular-truncated-cone-shaped oscillator, a guide cylinder, a transmission rack bar, a variable-frequency motor, a hemispherical flexible container and a stone mill, wherein the circular-truncated-cone-shaped oscillator, the guide cylinder, the hemispherical flexible container and the stone mill are connected with the support frame by bolts; the transmission rack bar is in bell-and-spigot joint with the guide cylinder; the lower end of the transmission rack bar is in collision contact with the circular-truncated-cone-shaped oscillator through an oscillating ball; the upper section of the transmission rack bar is inserted into the hemispherical flexible container through the center of the bottom surface of the hemispherical flexible container; the variable-frequency motor is connected with the guide cylinder through bolts and is meshed with the transmission rack bar through a gear. The electromechanical oil extraction device is reasonable and novel in structure, multifunctional, high in mechanization degree, capable of simulating the conventional oil extraction process of people, high in oil extraction speed, high in oil extraction rate, and high in practicability, and the extracted oil is full-bodied and pure in flavor.