<p>The article provides research results on the physiology and biochemistry of the digestion system of termites of the genus Anacanthotermes. It should be noted that the salivary and intestinal enzymes play an important part in this process. The enzymes involved in the digestion of the studied insects are exclusively of the hydrolytic type. The data indicate that adult termites have 1.5 times as much exocellulase as young individuals do and 3 times more than nymphs, while the exocellulase in soldiers remains inactive. At the same time, no active carboxycellulase and cellobiase was registered in any of the castes. It was found that the activity of maltase, sucrose, lactase is almost <br /> the same in all groups of termites. For the first time, the activity of lactase in the salivary gland was determined for different castes of the genus Anacanthotermes.</p>