AgCu filler was used to obtain the brazing between Zr and CoCrFeMnNi HEA. The effects of brazing temperature and holding time on the microstructure and mechanical properties of the joints were analyzed. The results displayed that the typical microstructure of the joints brazed at 950 ℃ for 10 min was HEA/Crss/Zr(Cr,Mn)2/Zr2(Co,Cu,Ni,Fe)+Zr2(Ag,Cu)+Zr(Cr,Mn)2/Zr.The Joints had the maximum shear strength of 103.1 MPa. As the brazing temperature or holding time raised, the thickness of Cr-rich solid solution and Zr(Cr,Mn)2 layer were increased, the content of Zr2(Co,Cu,Ni,Fe) and Zr(Cr,Mn)2phase were increased whereas Zr2(Ag,Cu) phase was decreased. Finally, the failure mechanism of the joint was analyzed. Under the action of shear force, as the brazing temperature or holding time raised, the fracture position of the joint shifted from the Zr(Cr,Mn)2layer to the Zr2(Co,Cu,Ni,Fe) phase fracture in the center of the brazing seam.