I already have half-price card and glass7.But i heard that those cards cannot be use by bus.So i would like to know is here any card for bus?(it could be i pay it per month or per year,cause if i buy the tickies only when i need it ,its cost a lot...)
Or you guys think i should buy a bicycle~~~~

Halb-tax card is for all public transport. Unless it's some special bus.

Here is the link for the coverage just to be sure: SBB link

I also do not know of half card for bus.

There is no special half price card for buses in Switzerland. The SBB half price ticket can be used on most of Switzerland's public transport system.

*Has sudden flashback to playground-jibes*

Of course 'half-price' is not strictly true on the bus which might be where the confusion lies? Certainly in Bern the services offered by Bernmobil do not fall into the half-price category, but they do offer some reductions.

I believe it is similar in other cities but am sure others will correct me.

Halbtax is good for any buses `cept the one you need a helmet for. You know, the short one.