Mucormycosis, often known as 'black fungus' in India, is a fungal illness that has been identified in COVID-19 patients on an irregular basis. This case report describes a patient who was diagnosed with rhino-orbital-cerebral mucormycosis infection following COVID-19 infection. The COVID-19 infection weakens the patient's immune system, making the patient more susceptible to other fungal infections. He had surgery for this as well as ocular exenteration surgery. A physiotherapy treatment was intended to battle the post-surgery problems, including COVID-19 infection. The goal of the physiotherapy was to improve the patient's facial muscles after surgery. Following recovery from the COVID-19 infection, it also aimed to strengthen the patient's respiratory capacity and increase his exercise tolerance. As a result, the patient's quality of life improves. It included the facial proprioceptive neuromuscular facilitation (PNF) exercise as well as a wellplanned cardiovascular exercise programme. The 6-minute walk test, peak expiratory flow rate, and quality of life questionnaire were used to assess the efficacy of the physiotherapy treatment.