A sine wave generating apparatus comprises: a phase accumulating module, configured to acquire configuration information of a sine wave, and generate address information comprising integer address information and decimal address information; a value searching module, configured to search for first data information and second data information of the sine wave according to the integer address information; an interpolation module, configured to conduct interpolation between the first data information and the second data information, and acquire interpolation original data information of the sine wave according to the decimal address information; a random truncating module, configured to conduct truncation processing on the interpolation original data according to the bit width of the decimal address information and a pseudorandom sequence output value to acquire final interpolation data information of the sine wave; and a sine wave generating module, configured to generate image information of the sine wave according to the final interpolation data information of the sine wave.