[Object] To provide a scribing apparatus with which fine adjustment with a low load is possible, thin films on the solar cell substrate can be shaved off with precision, thin films can be prevented from peeling irregularly, and straight and precise scribe lines can be created.[Means for Achieving Object] A scribing apparatus for thin film solar cells with which the blade of a trench creating tool 4 that is attached to the scribe head 1 is pressed against the surface of a solar cell substrate along a line along which the integrated thin film solar cell substrate W is to be scribed when the trench creating tool 4 is moved over the solar cell substrate W, so that a trench is created in the thin film formed on the surface of the solar cell substrate W, comprising: a tool holder 5 that is attached to the scribe head 1 in such a manner as to be movable upward and downward and holds the trench creating tool 4; an air cylinder 6 for pressuring the tool holder 5 against the surface of the solar cell substrate W; and a spring 7 for pressuring the tool holder 5 upward.