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The application relates to a coaxial connector dynamic assembly control method based on time domain reflection feedback. The method comprises the following steps: constructing a target impedance model; calibrating an assembly zero point; driving a shielding shell to quickly approach a preset safe depth; performing a fine regulation cycle of step-by-step pressing and impedance detection to obtain an instantaneous impedance characteristic value; and stopping pressing and fixing the position of the shielding shell when the instantaneous impedance characteristic value falls within the target impedance parameter range. The application controls the mechanical assembly depth through the electrical performance feedback closed loop, effectively eliminates the influence of the manufacturing tolerance on the characteristic impedance, solves the impedance dispersion problem in the assembly of special-shaped terminals, and significantly improves the high-frequency performance consistency and assembly yield of the connector.