The invention discloses a power anchor increasing the penetration depth and improving the anti-pullout performance. The power anchor comprises an anchor body, the front end of the anchor body is provided with a tapered anchor head, and the tail portion of the anchor body is provided with a balance wing plate; the power anchor further comprises an anti-pullout wing plate located between the anchorhead and the balance wing plate, the front end of the anti-pullout wing plate is hinged to the anchor body through a hinging mechanism, the inner side of the anti-pullout wing plate is fixed to the anchor body through an expansion mechanism, and a flared gap is formed between the anti-pullout wing plate and the anchor body. The power anchor has the advantages that by retracting the anti-pullout wing plate, arranging a propulsion mechanism and the like, in the penetration process, the dropping kinetic energy of the power anchor is effectively increased, and the penetration depth is increased; by opening the anti-pullout wing plate, arranging a grouting mechanism and the like, in the pulling-up process, the stress surface of the power anchor is effectively enlarged, and soil is effectively solidified, so that the anti-pullout performance is improved.