Abstract: In order to further expand coconut fiber′s development and application areas, a single fiber length method of measurement is used for determination of length-distribution of the coconut fiber.The test reveals that the coconut fiber length is within 8～337 mm,and a computer simulation for coconut fiber distribution has been developed.Coconut fiber length distribution is proved to be continuous,with the notable features of natural fiber distribution.Through measurement and analysis,the authors study the coconut fiber length distribution,length-weight distribution,and length-linear density distribution.It is concluded that the average coconut fiber linear-density is 27.89 tex and linear-density 18.265～70.442 tex.