The invention discloses a 64-path Ka waveband array switch. The 64-path Ka waveband array switch comprises a transmitting system and a receiving system, the transmitting system at least comprises a first one-to-four switch assembly, four first one-to-sixteen switch assemblies and four first waveguide horn antennas. A signal is input into the transmitting system; the first one-to-four switch assembly divides the received signal into four paths; wherein the four paths of signals are respectively input into the four first one-to-sixteenth switch assemblies, each first one-to-sixteenth switch assembly divides each path into sixteen paths, and the four first one-to-sixteenth switch assemblies are respectively connected with a first waveguide horn antenna so as to transmit a received signal; thereceiving system at least comprises a second one-to-four switch assembly, four second one-to-sixteen switch assemblies and four second waveguide horn antennas; the 64-path Ka wave band array switch solves the problems that an array switch in the prior art is narrow in frequency range, low in switching speed, small in minimum isolation degree of adjacent channels and large in standing-wave ratio.