Virtual synchronous generator (VSG) emulate synchronous generators to provide inertia and damping support for distributed power integration. However, conventional VSG control employs fixed parameters that hinder dynamic adaptation to system changes, often resulting in grid connection impact currents and voltage harmonics. To overcome these limitations, this study proposes a pre-synchronization strategy based on coordinated adaptive control of VSG parameters. A VSG mathematical model is established to analyze parameter influences on system output characteristics. A coordinated adaptive control method incorporating rotational inertia and damping coefficients is then developed, which demonstrates faster suppression of excessive changes and deviations in output response compared to conventional strategies. Furthermore, a pre-synchronization mechanism is integrated to achieve smooth grid synchronization while significantly reducing inrush currents and voltage harmonics before and after connection. Simulation results via PSCAD validate the feasibility and effectiveness of the proposed control strategy.