An electrical power connector and a terminal assembly are disclosed. The electrical power connector includes a base and two terminal assemblies arranged up and down and being in a left-right staggered arrangement. Each terminal assembly includes a conductive terminal and two reinforcing terminals located on two sides of the conductive terminal. L-shaped pressing portions of the two reinforcing terminals together clamp arc protruding parts of the conductive terminal, so that the two terminal assemblies have high conductivity and good elastic to provide a better electrical performance and a long term reliable connection.