In view of the large measurement error introduced by the non-verticality of the wire, which still exists in the Magnetic sensor arrays, a 3-D tunnel magnetoresistance (TMR) sensor array scheme is proposed to precisely measure the current when the wire is eccentric and tilted. Then the current measurement error of the single-axis, two-axis and three-axis TMR sensor array is simulated and compared, where the maximum current errors are 25%, 20.5% and 1.39%. It is obvious that the 3-D TMR sensor array can significantly improve the measurement accuracy and overcome the influence of eccentricity and tilt, so the 3-D TMR sensor array has great advantages in the field of current measurement.