The invention relates to a method for culturing 
penaeus vannamei in a 
cement pool by means of microecological preparations. The method comprises the steps that 1, 
fresh water is inoculated with 
lactic acid bacteria and EM 
bacteria separately, culture media A are added respectively, culturing is conducted under the aerobic and normal-temperature conditions, filtering is conducted, 
fresh water and a culture medium B are added for culturing respectively, and then the microecological preparations are obtained; 2, in a 
water body in which the 
penaeus vannamei is cultured, the 
lactic acid bacterium microecological preparation with the concentration 
ranging from 75 ml / m<3> to 100 ml / m<3> is added every day, the EM bacterium microecological preparation with the concentration 
ranging from 50 ml / m<3> to 75 ml / m<3> is added 
every three days, the 
water temperature is controlled to be 28+ / 3 DEG C, the 
salinity is controlled to be 20-35, the pH is controlled to be 7.8-8.4, the dissolved 
oxygen is kept at 8 mg / L or above, and compound feed is put four times every day at 06:00, 11:00, 16:00 and 22:00 respectively. According to the method, 
inoculation culture is conducted in the culture 
pool by adopting the microecological preparations, the 
weight gain rate, the 
specific growth rate and the 
survival rate of the 
penaeus vannamei can be significantly increased, the feed coefficient can be significantly decreased, and the yield can be increased by 25% or above; in addition, the commercial penaeus vannamei is thoroughly cyan in body color, and after the commercial penaeus vannamei is cooked, the color is thoroughly red, and the color sense is enhanced.