The invention discloses a convenient bridge construction device. The device structurally comprises rollers, a driving shaft, a cover shell, a hanging lug, a support, a joint, a supporting block and aconstruction acceleration system, the number of the rollers are four, and every two rollers are mechanically connected through a driving shaft; according to the convenient bridge construction device,one-way mechanisms, auxiliary acceleration mechanisms, sliding structures, sliding jacking structures and power dispersing structures are arranged, wherein mechanical force generated by a motor is divided into two parts through the power dispersing structures, meanwhile, the two sliding jacking structures are driven to rotate, and then the sliding jacking structures make the one-way mechanisms rotate more stably by the transmission of the sliding structures; and the bidirectional rotation is converted into one-way rotation, the auxiliary acceleration mechanism accelerates a winding drum to rotate, on one hand, the relaxation length of a lifting rope is increased, meanwhile, the friction force between the winding drum and the lifting rope is reduced, so that the piling speed can be increased, a pile body can penetrate into the soil more deeply, and the construction efficiency of the bridge can be indirectly improved.