(EN) The present invention is a rust-inhibiting paint composition characterized by comprising: a binder (a); zinc powder and/or zinc alloy powder (b); and glass powder (c) with a softening point of 400-800°C, and in which the total content of Li2O, Na2O and K2O is 12 mass% or less. According to the present invention, it is possible to provide a rust-inhibiting paint composition capable of forming a rust-inhibiting film having excellent weldability, excellent rust-inhibiting properties due to the prevention of zinc oxidation even after said rust-inhibiting film is heated to a high temperature, e.g. 400-900°C, and excellent adhesiveness to a top coating film. It is also possible to provide various applications using said rust-inhibiting paint composition.