Abstract: A wavy-shaped electric straight comb, which includes a comb part and a handle. The comb part has a first comb and a second comb, and the first comb has a plurality of first comb teeth, and the second comb has a plurality of second comb teeth, a plurality of through holes, each formed between two adjacent second comb teeth, which the plurality of first comb teeth of the first comb respectively drills through the plurality of through holes of the second comb, and each first comb teeth is disposed between two corresponding adjacent comb teeth, for assembling the first comb and the second comb together, and each of the first comb teeth and the second comb teeth defines a wavy-shaped cross-section, and two adjacent first and second comb teeth keep an interval from 0.25 mm to 1.5 mm and define a wavy-shaped hair accommodating space.