To provide a glass substrate conveyance device having a function for performing front and back discrimination and discrimination of unprocessed glass, while conveying a glass substrate without stopping the conveyance device temporarily.

In the glass substrate conveyance device performing discrimination of a surface where a conductive film is formed, while conveying a glass substrate having a conductive film formed on one of the front and back surfaces, mounting means for mounting the glass substrate is provided with a current conduction detection part A for detecting the conductive film on the back surface of the glass substrate, and a current conduction detection part B for detecting the conductive film on the front surface of the glass substrate by abutting against the front surface of the glass substrate mounted on the mounting means.