also prevents the adjacent solder materials 30 d from spreading after being melted referring to fig1 the present invention provides a socket connector the socket connector includes an insulative housing 10 e a plurality of terminals 20 e and solder materials 30 e the insulative housing 10 e has a plurality of longitudinal terminal slots 11 e arranged adjacent to one another and a plurality of stoppers 13 e each of the stoppers 13 e is protruded inwardly from one interior surface of each terminal slot 11 e and has an overflow hole 14 e formed therein each of the terminals 20 e has a contact section 201 e projected out an upper opening 111 e of each terminal slot 11 e a fixed section 202 e being fixed between each stopper 13 e and other interior surface of each terminal slot 11 e and a soldering section 203 e projected out a lower opening 112 e of each terminal slot 11 e the solder materials 30 e are located in each overflow hole 14 e and covered around each soldering section 203 e during a soldering procedure wherein during the soldering procedure any parts of the solder material 30 e are able to receive outside temperature of the insulative housing 10 e from the upper opening 111 e and the lower opening 112 e of each terminal slot 11 e respectively during the soldering procedure the solder material 30 e automatically flows from the lower opening 112 e of each terminal slot 11.