Deformities of the foot, such as flatfoot, may develop over time or become apparent due to trauma. The forefoot may also be abducted, depending on whether it's acquired or developing. Treatment of flexible flat foot in children aged 5 to 15 years is being studied to evaluate the advantages and results of calcaneal stop surgery with subtalar arthroereisis. Methods: A total of 30 people with flexible flat feet were included in this research. The calcaneus stop treatment was used on 15 patients, while the arthroereisis procedure was used on another 15 patients. AOFAS, VAS, and radiographic indicators like Meary's angel and calcaneal pitch angle in a standing lateral ankle view are some of the assessment methods used. Results: After Subtalar arthroereisis (0.47 0.52), the postoperative mean visual analogue pain scale (VAS) was substantially better than after the Calcaneal stop operation (1.1 0.88) (p=0.03). It should be noted that following Subtalar arthroereises, the average Calcaneal valgus angle was substantially better than after the Calcaneal stop treatment (p=0.004). The likelihood of complications was very low (10 percent ) One patient (3.3 percent) had Talar osteolysis, one (3.3 percent) had Subluxation of screw, talar osteolysis, and one (3.3 percent) had Aseptic Loosening, Pain, Minute Peri screw Fracture. Only three patients had major problems. As a consequence of this, we suggest the calcaneus stop technique owing to its lower cost and similar outcomes (p = 1; no statistically significant difference between the two operations).