A curvature measurement apparatus, wherein the apparatus comprises: a first curvature measurement unit, configured to, when a curvature of an object to be measured is greater than a first curvature, measure the curvature of the object to be measured, wherein the first curvature measurement unit comprises: a resistive strain gauge sensor, wherein the resistive strain gauge sensor is configured to have a shape extending along the object to be measured, and when the curvature of the object to be measured is greater than the first curvature, the resistive strain gauge sensor bends as the object to be measured bends, to change a resistance of the resistive strain gauge sensor; and a first curvature calculation unit, configured to calculate the curvature of the resistive strain gauge sensor according to the resistance of the resistive strain gauge sensor, to use the curvature as the curvature of the object to be measured; and a second curvature measurement unit, configured to, when the curvature of the object to be measured is smaller than a second curvature, measure the curvature of the object to be measured, the second curvature measurement unit comprises: a pressure sensor, wherein the pressure sensor is configured to come into contact with the object to be measured, and when the curvature of the object to be measured is smaller than the second curvature, the pressure sensor senses a pressure applied by the object to be measured to the pressure sensor as the object to be measured bends; and a second curvature calculation unit, configured to calculate the curvature of the object to be measured according to the pressure sensed by the pressure sensor wherein the second curvature is greater than or equal to the first curvature. a first curvature measurement unit, configured to, when a curvature of an object to be measured is greater than a first curvature, measure the curvature of the object to be measured, wherein the first curvature measurement unit comprises: a resistive strain gauge sensor, wherein the resistive strain gauge sensor is configured to have a shape extending along the object to be measured, and when the curvature of the object to be measured is greater than the first curvature, the resistive strain gauge sensor bends as the object to be measured bends, to change a resistance of the resistive strain gauge sensor; and a first curvature calculation unit, configured to calculate the curvature of the resistive strain gauge sensor according to the resistance of the resistive strain gauge sensor, to use the curvature as the curvature of the object to be measured; and a resistive strain gauge sensor, wherein the resistive strain gauge sensor is configured to have a shape extending along the object to be measured, and when the curvature of the object to be measured is greater than the first curvature, the resistive strain gauge sensor bends as the object to be measured bends, to change a resistance of the resistive strain gauge sensor; and a first curvature calculation unit, configured to calculate the curvature of the resistive strain gauge sensor according to the resistance of the resistive strain gauge sensor, to use the curvature as the curvature of the object to be measured; and a second curvature measurement unit, configured to, when the curvature of the object to be measured is smaller than a second curvature, measure the curvature of the object to be measured, the second curvature measurement unit comprises: a pressure sensor, wherein the pressure sensor is configured to come into contact with the object to be measured, and when the curvature of the object to be measured is smaller than the second curvature, the pressure sensor senses a pressure applied by the object to be measured to the pressure sensor as the object to be measured bends; and a second curvature calculation unit, configured to calculate the curvature of the object to be measured according to the pressure sensed by the pressure sensor wherein the second curvature is greater than or equal to the first curvature. a pressure sensor, wherein the pressure sensor is configured to come into contact with the object to be measured, and when the curvature of the object to be measured is smaller than the second curvature, the pressure sensor senses a pressure applied by the object to be measured to the pressure sensor as the object to be measured bends; and a second curvature calculation unit, configured to calculate the curvature of the object to be measured according to the pressure sensed by the pressure sensor wherein the second curvature is greater than or equal to the first curvature.