The article provides literature data on the trends of malignant neoplasms not only in the world but also in the Kyrgyz Republic. Malignant neoplasms are a global problem in public health, occupy a leading place for the causes of mortality. In 2018, more than 18 million new cases of cancer were diagnosed worldwide, more than 9.6 million people died, and the total number of patients increased to 43 million. According to forecasts, by 2030, the number of new cases of cancer will increase to 26.4 million per year, and the number of deaths — up to 17 million. The epidemiological situation of cancer remains unfavorable, both in Russia and around the world. In the Russian Federation, there is an increase in cancer incidence from 363.0 in 2010 to 425.3 in 2018 per 100,000 population. Moreover, the growth trend is observed in all regions of the country. In the Kyrgyz Republic, the incidence of malignant neoplasms increased from 83.1 in 2010 to 90.3 per 100,000 of the population in 2018. This indicator is growing in Chui, Naryn and Batken regions, as well as in Osh, and in other regions, there is a slight decrease in the indicator. In the structure of oncological morbidity, the first place is occupied by breast cancer (206‱), the second place — cancer of the cervix (153‱), and the third place — cancer of the stomach (117‱). It should be noted that in Russia for every 100 patients who died from malignant neoplasms, 10.7 were not registered. The mortality rate in the Kyrgyz Republic has somewhat stabilized, both in the republic as a whole and in individual regions, and in 2018 amounted to 56.3 per 100,000 of the population (56.4 in 2017). In the female population, 1st place is occupied by breast cancer — 605‱, 2nd place — by the cervix (153‱), 3rd place — by the stomach (71‱). One of the most common forms of malignant neoplasms of the organs of the reproductive system is cervical cancer, which takes 2nd place in frequency and 3rd place in mortality from cancer in women. The analysis of morbidity and mortality from malignant neoplasms in various countries showed that screening and early detection, as well as timely and effective treatment, are necessary to reduce mortality.