From 1991 to 2019, the mortality rate from lower respiratory tract infections has been on a downward trend. Overall, in 1991, 4.42% [4.08% - 4.79%] of the population died from lower respiratory tract infections. Further, over a period of approximately 20 years, mortality has been declining: 1995 - 3.39% [3.16% - 3.64%]; 2000 - 2.99% [2.78% - 3.2%]; 2005 - 2.66% [2.49% - 2.85%]; 2010 - 2.52% [2.37% - 2.7%]. Despite the fact that until 2010 the number of deaths for the group of diseases studied by us decreased, since 2011 the mortality rate began slightly, but increased, and by 2015 the mortality rate from lower respiratory tract infections was 3.02% [2.83% - 3. 22%]. But then, by 2019, the death rate began to decline again and amounted to 2.88% [2.63% - 3.13%]. Since 1991, the Republic of Kazakhstan has maintained a high mortality rate from lower respiratory tract infections in children under 14 years of age. And also, compared with 1991, in 2019 the mortality rate doubled among representatives of older age groups (15-49; 50-69; and over 70 years old). Based on the results of ranking by gender, a relatively high rate of mortality from lower respiratory tract infections among men was determined.