The invention relates to the technical field of static characteristic optimization, and discloses a method for optimizing a reluctance static characteristic based on sensing direction. The method comprises the following steps: 1, setting an easy-axis bias field and a hard-axis bias field as constant values, and setting the value of the sensing direction to obtain a sensing curve; 2, selecting the maximum value hFM of a specific magnetic field measurement range, subjecting the sensing curve to optimization of an objective function, which is described in the specification, to obtain a sensitivity k, a bias b and an absolute error Err; 3, selecting the maximum values hFM of different magnetic field measurement ranges and repeating the step 2; 4, selecting the values of different sensing directions, repeating steps 1 to 3, and obtaining N relation curves between the absolute error Err and the magnetic field measurement ranges in the same two-dimensional coordinates; 5, obtaining a corresponding value of the sensing direction that makes a minimum absolute value under the specific magnetic field measurement range, the specific easy-axis bias field and the hard-axis bias field according to the two-dimensional coordinates. By adjusting the sensing direction, a larger linear area can be obtained.