The invention discloses a nut with a thread evenly loaded and belongs to the field of mechanical design. The nut is applied to the condition that axial force and thrust force of a thread pair are located on the different sides of the nut, and the nut bears pressure in two directions. The nut with the thread evenly loaded is characterized in that according to the structure of the nut, under the condition that the height of the thread is maintained unchanged, a nut base body at the thrust end of the nut is heightened, inner chamfers theta 1 are formed on the inner sides of the heightened part of the nut base body, and the height of the chamfers is the same as that of the heightened part; meanwhile, outer chamfers theta 2 are formed on the outer side of the loading end of the nut; and the ratio of the height of the nut to the diameter of the outermost circle of the nut base body is 0.6-1.5, the nut bears pressure in the two directions, the pitch of the nut is set h, the height of the inner chamfers is the increased height of the nut base body and is (1-4) h, the height of the outer chamfers is (2-7) h, the angle of the inner chamfers theta 1 ranges from 5 degrees to 60 degrees, and the angle of the outer chamfers theta 2 ranges from 20 degrees to 50 degrees. The nut with the thread evenly loaded has the beneficial effects that the phenomenon that loading of the thread pair is not even is improved, a thread face of the nut evenly bears pressure, and the fatigue life of the nut is prolonged.