The invention discloses a sucking training instrument for a neonate and a training method of the sucking training instrument for the neonate. The sucking training instrument for the neonate comprises a pressure measurement silicone tube, a pressure sensor, a sensor signal amplifying circuit, a microprocessor and a touch display screen, wherein one end of the pressure measurement silicone tube is a sucking end, the other end of the pressure measurement silicone tube is connected with a T-shaped tube, the pressure sensor is arranged at one end of the T-shaped tube, the other end of the T-shaped tube is connected with a milk storage device, and a milk valve is arranged at the end, connected with the milk storage device, of the T-shaped pipe; the pressure sensor is connected with the microprocessor through the sensor signal amplifying circuit, and the microprocessor is connected with the touch display screen and the milk valve and is used for controlling opening and closing of the milk valve. According to the sucking training instrument for the neonate and the training method of the sucking training instrument for the neonate, the initial sucking negative pressure of the neonate is obtained through a pressure measurement device, then parameters of the neonate are input through the touch screen, a target negative pressure for training is given by a system, the microprocessor controls the milk valve to be opened when the sucking negative pressure of the neonate reaches a predetermined value, and then the neonate can suck milk in the milk storage device. The pressure value can be increased step by step in the future, and thus the purposes of increasing sucking negative pressure of the neonate and fully stimulating milk secretion are achieved.