A data connection cable for virtual reality glasses and an external electronic device comprising a second interface, the virtual reality glasses comprising an eyeglass body, the eyeglass body comprises a first fastening portion and a second fastening portion, the first fastening portion can fasten one end of the external electronic device, and the second fastening portion can fasten the opposite end of the external electronic device, wherein the first fastening portion comprises a receiving space and a protruding block on a side wall of the receiving space, the data connection cable comprising: a first connecting plug at a first end of the data connection cable, the first connecting plug being fitted to a first interface on an eyeglass body of the virtual reality glasses, such that the data connection cable is detachably connected to the eyeglass body, and a second connecting plug at a second end of the data connection cable, the second connecting plug being fitted to a second interface of an external electronic device assembled to the eyeglass body, a first connecting portion at the first end, the first connecting portion configured to secure the first connecting plug with the data connection cable; a second connecting portion at the second end, the second connecting portion configured to secure the second connecting plug with the data connection cable; and a data cable body between the first end and the second end, wherein the second connecting portion is detachably connected to the first fastening portion; characterized in that at least a part of the data cable body and the first connecting portion are receivable in a first groove of the virtual reality glasses, the second connecting portion comprises a second groove, the second groove is fitted to the protruding block, such that the second connecting portion is connected to the first fastening portion by means of the fitting between the protruding block and the second groove. a first connecting plug at a first end of the data connection cable, the first connecting plug being fitted to a first interface on an eyeglass body of the virtual reality glasses, such that the data connection cable is detachably connected to the eyeglass body, and a second connecting plug at a second end of the data connection cable, the second connecting plug being fitted to a second interface of an external electronic device assembled to the eyeglass body, a first connecting portion at the first end, the first connecting portion configured to secure the first connecting plug with the data connection cable; a second connecting portion at the second end, the second connecting portion configured to secure the second connecting plug with the data connection cable; and a data cable body between the first end and the second end, wherein the second connecting portion is detachably connected to the first fastening portion; characterized in that at least a part of the data cable body and the first connecting portion are receivable in a first groove of the virtual reality glasses, the second connecting portion comprises a second groove, the second groove is fitted to the protruding block, such that the second connecting portion is connected to the first fastening portion by means of the fitting between the protruding block and the second groove.