Plug assembly with spark preventing function

The present invention discloses a plug assembly with a spark preventing function. According to the invention, a grounded pin which forms a contact part that contacts with a cover of a pin base is configured. The contact part of the grounded pin is arranged between the pin base and the cover of a wiring base. For contacting with the contact part, the cover of the pin base is formed in a shape of bending in a certain angle. According to the plug assembly provided by the invention, the structure of the cover which covers the pin base is improved for contacting with the pin, thereby preventing spark generation in high-frequency test and furthermore improving reliability and durability of the product.