The invention discloses a new resonance tube urheen with an urheen skin capable of being tensioned freely, comprising an urheen tube and the urheen skin; an urheen skin tensioning device is arranged inside the urheen tube and comprises a metal sleeve fixed on the urheen skin, a pulling claw installed on the inner wall of the metal sleeve, a screw connected on a metal ring, and a resonator; one end of the resonator is fixed on the pulling claw, the other end is connected on the screw through a front suspender, and the resonator is a steel wire or an elastic steel slip. The new resonance tube urheen with the urheen skin capable of being tensioned freely overcomes the disadvantages generated in the process of producing urheens and the defect that the urheen skin is flabby in future and can not be adjusted; the tightness of the skin of the produced finished urheen can be adjusted according to playing requirements of a user, thus meeting the requirements of tone colors required by playing music with different styles; and meanwhile, the steel wire or the elastic steel slip is taken as the resonator, thereby overcoming the defect of insufficient resonance because the urheen tube of the urheen is too small.