A locally repairable code (LRC) is a linear code that each code symbol can be encoded by downloading a small number (at most r) of other code symbols. In this paper, we use the parity-check matrix approach to obtain 58 classes code parameters for octonion-field optimal LRCs of distance 3. Then three optimal oction-field LRCs of distance 4 with locality r = 2 and r = 3 are given by adding linear independent set to the parity-check matrix.