The invention discloses a simple method for hatching the male larva of mauremys mutica, belonging to the technical field of control on the male gender of terrapin animals. The method comprises the following steps: 1) during the mating season of the mauremys mutica, putting the long diameter of fertilized ovum into a hatching matrix, enabling embryos to be upward, and covering a hatching matrix with same humidify on the fertilized ovum; 2) horizontally arranging a hatching box on a bracket in an artificial cellar, controlling the temperature and the air humidity in the cellar, and hatching for 55-65 days in the cellar; and 3) when 23 circles of developmental duration for hatching the ovum of the mauremys mutica into the embryos in the cellar finishes, horizontally moving the hatching box into a common hatching room to continue to hatch, and obtaining the larva of the mauremys mutica by hatching for 10-20 days. According to the method, the gender of the newly born larva of the mauremys mutica can be controlled effectively, the ovum hatching rate is increased, and the larva quality is enhanced.