There were 27 men under observation who got conservative treatment for Peyronie's disease. The criteria for inclusion in the study were the maximum size of the plaque of the penis up to 1.5 cm and the angle of curvature of the penis is less than 45 degrees. Before treatment, after 6 and 12 months, patients underwent ultrasonic dopplerography of the penis, the velocity of blood flow in the cavernous and dorsal arteries and the size of the plaque were determined. All observed patients were prescribed combined therapy, such as symptomatic, immunological and physiotherapeutic treatment. In this case, the patients of the 1st group (n = 15) additionally got longidase treatment (intramuscularly for 3000 IU every 3 days, for a course of 10 injections with concurrent administration of rectal suppositories with longidase at the same dose for a course of 10 suppositories). Locally, these patients were assigned phonophoresis with lengidase on the plaque area (10 sessions). The remaining 12 patients (2nd group) didn’t got longidase treament. Six months after the start of treatment the absence of plaques was recorded in 8 (53.3%) patients in the 1st group and 4 (33.3%) in the 2nd group of patients and in 12 months in 11 (73.3%) and 6 (41.6%) patients. Thus, conservative therapy in Peyronie's disease is effective in patients in the early stages of the disease with moderate deviation of the penis and plaques up to 1.5 cm. The inclusion of longidase in the complex therapy increases the effectiveness of the treatment. (For citation: Kalinina SN, Fesenko VN, Nikolskii AV, et al. Assesment of the efficiency of conservative treatment of Peyronie’s disease. Urologicheskie vedomosti. 2018;8(1):5-10. doi: 10.17816/uroved815-10).