The invention provides a connector with an in-mold package and an injection molding package method thereof, comprising an upper shell and a lower shell, wherein an upper conductive terminal is arranged in the upper shell and a lower conductive terminal is arranged in the lower shell; An encapsulation molding cavity is formed between the upper housing and the lower housing, An upper injection mol positioning hole is arrange in that upper shell, A low injection molding position hole is arranged in that lower shell, An upper conductive terminal is connected to that top of the package molding cavity, The lower conductive terminal is connected with the bottom of the encapsulation molding cavity, and conductive resin is injected into the encapsulation molding cavity from the upper injection molding positioning hole or the lower injection molding positioning hole until the conductive resin fills the lower injection molding positioning hole, the encapsulation molding cavity and the upper injection molding positioning hole, and the conductive resin is cooled and solidified to form a conductive vibration absorber. The invention integrates the production and encapsulation actions of the special parts, has high production efficiency and eliminates the transportation and storage steps of the parts. The package formed by injection molding package can effectively improve the shielding and anti-vibration effect of the connector.