The present invention provides a binocular adjustable telescope. The binocular adjustable telescope comprises a telescope body, the front portion and the back portion of the telescope body are respectively provided with an object lens and an ocular lens, the telescope body is a binocular, the two lens cones are connected through a connection board, the connection board is formed by a left connection board and a right connection board which are mutually inserted and fused and are connected through a rotation shaft, two ends of the rotation shaft are extended to the outer end of the connection board, the rotation shaft is provided with a lock nut, and the outer side of the locknut is provided with a rotary knob. The distance between the two cone bodies of the binocular adjustable telescope can be regulated, the operation is convenient, the object lens is not influenced by external dust and dirt and is not easy to lose, when a dust cover is rotated, the lens can be cleaned, the usage is convenient, the sizes of the dimensions of the telescope are few increased, and therefore the binocular adjustable telescope is suitable for travel, carrying and usage, and is suitable for usage of many people.