The traditional eddy current probes may neglect short cracks in special orientation. To address this issue, an absolute Koch planar eddy current probe is proposed. Both the excitation coil and the pickup coil of the probe adopt the Koch snowflake curve based on fractal self-similarity theory. Firstly, the finite element analysis for the Koch probe and the circular probe with the same dimension is conducted. Then, for cracks with different lengths, directions, widths and depths, the difference of response signals of two probes is compared. Finally, an experimental system is established to evaluate the finite element analysis results. Results show that for the inspection of cracks with different lengths, directions and widths, the finite element analysis results are qualitatively consistent with the experimental results. For the inspection of the crack with 3 and 5 mm in lengths, the variations of signals output from the Koch probe are at least 40% higher than those of the circular probe. In the detection of crack in different orientations, the variation of signal output from the Koch probe is at least 49% higher than that of the circular probe for the inspection of the 90° crack which is difficult to be detected. In the detection of crack in different widths, the variation of signal output from the Koch probe is at least 29% higher than that of the circular probe. In the detection of crack in different depths, the variation of signal output from the Koch probe is at least 6% higher than that of the circular probe. The Koch probe has more significant edge for the inspection of short cracks relative to the circular probe. The research result has important reference significance for the design of the electromagnetic structure of planar eddy current probe.