A construction vehicle tire comprising a tread having a center block formed in a center part in a tire width direction, the center block including a width direction narrow groove extended in the tire width direction, and a notch groove communicated with the width direction narrow groove and having a slope portion inclined toward an inner side in a tire radial direction, wherein: a circumferential direction groove extended in a tire circumferential direction is not formed in the center block ; the width direction narrow groove is terminated in the center block ; the notch groove comprises a first outer groove formed at one end side in the tire width direction of the width direction narrow groove , a second outer groove formed at another end side in the tire width direction of the width direction narrow groove; a slope portion of the first outer groove is inclined to be close to the inner side in the tire radial direction toward one side in the tire circumferential direction; and a slope portion of the second outer groove is inclined to be close to the inner side in the tire radial direction toward another side in the tire circumferential direction; characterized in that : the center block is formed in a range of 1/8-3/8, inclusive, of a tread width in each of one side and another side in the tire width direction with respect to a tire equatorial line; a plurality of inner grooves formed between the first outer groove and the second outer groove ; and each of slope portions of the inner grooves is inclined to be close to the inner side in the tire radial direction toward one side or another side in the tire circumferential direction. a circumferential direction groove extended in a tire circumferential direction is not formed in the center block ; the width direction narrow groove is terminated in the center block ; the notch groove comprises a first outer groove formed at one end side in the tire width direction of the width direction narrow groove , a second outer groove formed at another end side in the tire width direction of the width direction narrow groove; a slope portion of the first outer groove is inclined to be close to the inner side in the tire radial direction toward one side in the tire circumferential direction; and a slope portion of the second outer groove is inclined to be close to the inner side in the tire radial direction toward another side in the tire circumferential direction; characterized in that : the center block is formed in a range of 1/8-3/8, inclusive, of a tread width in each of one side and another side in the tire width direction with respect to a tire equatorial line; a plurality of inner grooves formed between the first outer groove and the second outer groove ; and each of slope portions of the inner grooves is inclined to be close to the inner side in the tire radial direction toward one side or another side in the tire circumferential direction. the center block is formed in a range of 1/8-3/8, inclusive, of a tread width in each of one side and another side in the tire width direction with respect to a tire equatorial line; a plurality of inner grooves formed between the first outer groove and the second outer groove ; and each of slope portions of the inner grooves is inclined to be close to the inner side in the tire radial direction toward one side or another side in the tire circumferential direction. <EOS>