Abstract: The irrigation experiments of Tamarindus indica were conducted in Jingu. The results showed that (1) different irrigation treatments had very obviously different effects on preservation rate, height growth and new slip rate of Tamarindus indica,and therefore indicated that the irrigation was necessary for the cultivation of T. indica in Jingu; (2) According to the changes of the preservation rate and growth amount at different times,irrigation only needed carrying out in the dry season,and once every 7 days.