Minimally invasive root canals are generally painless. Minimally invasive root canal treatment involves removing the infected pulp and infected dentin with specialized tools, root canal cleaning, disinfection, and root canal filling to isolate bacteria and prevent infection. It is generally painless using painless needles and minimally invasive techniques and is used to treat diseases such as pulpitis and pulp necrosis. Crown restoration is recommended to protect the teeth after minimally invasive root canal treatment, patients should be prohibited from eating too hard food to avoid tooth damage and recurrence of the condition, etc. Usually, the diet should be light, do a good job of daily oral care, and develop good oral hygiene habits to avoid breeding bacteria to affect the root canal treatment. It is recommended that patients go to the hospital for examination and treatment under the guidance of the doctor.