As an intermediate in the synthesis of drugs, dicyandiamide is used in the synthesis of certain anti-cancer medications. It is also a key intermediate in the production of antiviral drugs, contributing to the development of treatments for various viral infections.

As a slow-release agent in fertilizers, dicyandiamide can improve the efficiency of nitrogen fertilizers, extends the duration of their effectiveness, reduces the frequency and amount of fertilizer application, and lower agricultural production costs.

Dicyandiamide can be used in the production of melamine, thiourea, cyanamide resins, and other chemical products.