@Vladlen Korolev
thank you for the quick reply.

Hi Yuri Kovelenov
I have tested this html file on iphone4,iphone6+,and ipad mini2.they all don't work. but all my android mobiles work fine.

I have a problem of playing armerture animation on ios 9,but the html file that I exported from blender works fine on android device,I have no idea why the armture animation not work on iphone but work fine on android device.also It works fine on pc webbrowser.

the gif below show this animation how is working on pc(upside) and on ios 9(underside).