Plug connector and radio frequency connector assembly

A plug connector, comprising:

• a first insulating base comprising an insulating fitted portion and an insulating holding portion (112) that are sequentially disposed;
• two first signal terminals fixed on the first insulating base, wherein each of the two first signal terminals comprises a first contact portion, a first connection portion and a first fixing portion that are sequentially disposed, wherein the first contact portion is fixed on the insulating fitted portion, and the first fixing portion is fixed on the insulating holding portion and configured to be fixedly connected to a coaxial cable;
• a first shielding spacer fixed on the first insulating base and disposed between the two adjacent first signal terminals;
• a first shielding housing disposed on an upper side of the first insulating base;
• a second shielding housing disposed on a lower side of the first insulating base and comprising a lower shielding frame and a lower shielding housing;
• and
• a shielding enhancement housing disposed between the first insulating base and the second shielding housing and comprising a front shielding plate, a connecting plate and a holding plate that are sequentially disposed, wherein the front shielding plate is connected to the insulating fitted portion, a width of the front shielding plate is greater than a thickness of the lower shielding frame, and the holding plate is connected to the insulating holding portion.