The present disclosure discloses a phase antenna assembly and an electronic device using the phase antenna assembly. The phase antenna assembly includes a first antenna baseboard, a second antenna baseboard, and a connection baseboard: the first antenna baseboard includes a first polarization antenna array and a first connection node array; the second antenna baseboard includes a second polarization antenna array and a second connection node array; the connection baseboard includes a third connection node array and a fourth connection node array; the third connection node array is connectable with the first connection node array by at least two connection manners with different angles, and/or the fourth connection node array is connectable with the second connection node array by at least two connection manners with different angles.