Abstract: Insect monitoring is an important part of integrated management of stored grain pest insects. Timely detection of stored grain insects occurrence is the key to scientific and efficient pest insect control. Applying food attractants is a common method to trap pest insects by using insect tendency to volatile information compounds. Food attractants have the advantages of easy access to raw materials, no killing natural enemies, no insect resistance, and long effective period. At present, sex pheromones are still the main technical means for monitoring stored grain pest insects at home and abroad. However, this strategy can only trap male adults of stored grain pest insects rather than larvae of stored grain insects. Larvae is an important insect stage of stored grain insects, and using food attractants to timely monitor the occurrence of stored grain insect larvae is an important strategy to achieve efficient insect control. Therefore, it is of great significance to develop food attractants for highly efficient detecting stored grain insect larvae. The behavioral selectivity of 3 stored grain insects to 10 kinds of food and 2 kinds of compounds were investigated under laboratory conditions, respectively. Then, the best attractant ratio combination for each test insect was screened. The results showed that the best attractant ratio combination for T. castaneum larvae was 1∶2∶3 for sesame oil: cooked soybean oil: carbon tetrachloride in the test sample, and the highest trapping coefficient was 70.0％. Sunflower oil was the most attractive odor source for the O. surinamensis larvae, and the trapping coefficient reached 45.0%. Rapeseed oil had the best trapping effectiveness on the C. ferrugineuslarvae, and the trapping coefficient reached 40.0%. Rapeseed oil and wine koji showed strong attracting effects on the three experimental pest insects. The attractive effectiveness of rapeseed oil on the tested larvae was as follows: T. castaneum > C. ferrugineus > O. surinamensis, and the attractive effectiveness of wine koji on the tested larvae was as follows: T. castaneum > O. surinamensis > C. ferrugineus. The results provided theoretical and technical support for effectively monitoring the occurrence of larvae of T. castaneum, O. surinamensis, and C. ferrugineus, and scientifically implementing ecological control of stored grain pest insects.