A facile, one-pot solvothermal method is developed to synthesize MoS₂ nanoflowers (MoS₂NFs) coated on reduced graphene oxide (rGO) paper. The resulting MoS₂NF/rGO paper serves as a freestanding, flexible and durable working electrode for hydrogen evolution reaction (HER), exhibiting an overpotential lowered to −0.19 V with a Tafel slope of ∼95 mV per decade.