The invention discloses a culturing method of squaliobarbus curriculus regarded as forage fish for out-of-season culturing of mandarin fish. The culturing method belongs to the technical field of aquaculture, and comprises the following steps of (1) pond cleaning and disinfecting; (2) culturing conditions; (3) summer flower culturing; (4) fingerling rearing. The method provided by the invention takes the lead in breaking through the key technology that live forage fish i.e. dace suitable for the later period of culturing of the mandarin fish cannot survive through the winter in Northern China, creatively provides the idea of regarding the high-yield cultured fishes i.e. squaliobarbus curriculus with high low-temperature resistant capacity as the forage fish for the later period of culturing of the mandarin fish, effectively ensures the supply of the forage fish for the mandarin fish to live through the winter and in later period of culturing from the following spring to August by an efficient culturing mode of putting fries in different months, thoroughly solves the problem of the restriction of insufficient and unwell supply of the forage fish suitable for the later period of culturing of the mandarin fish in winter in Northern China, and provides important forage fish guarantee for the out-of-season culturing of the mandarin fish.