The primary object of the present of invention is to provide a button binder in which paper or sheets can be easily retained and moved out, which exclude the above-mentioned disadvantages. In accordance with one embodiment of the invention, the button binder includes several buttons, connection pieces, pulling pieces, a front sheet, a rear sheet and strips. An appropriate number of the buttons are fixed on the appropriate position on the binder, such as on the left portion or top portion of the rear sheet. The buttons mainly compromises a cap and a post. The cap has an axial hole. The post is capable of engaging in the axial hole of the cap and being fastened tightly. Punched papers or sheets can be hold by the post under the cap. When paper in the button binder is opened, there is big force to open the buttons. In order to secure the paper tightly, the buttons are designed to be opened only in a proper direction or site, and the buttons can not be opened in non-proper direction or site. Where the site of the button can be opened, the button cap and the post mesh by smooth curve faces as usual buttons. However, where the site of the button can not be opened, the button cap has tooth pawl, the button post also has latch tooth. They mesh together by teeth to firmly grasp paper. Moreover, where the button can not be opened, the button cap and post have enough touching length along the axial direction of the post, they engage by the longer contacting length (or area) along the post, the button also can not be opened from here. Another way is by latch rod of the cap and claw notch of post. The spring latch rod engages in the claw notch, the button also can not be opened from this place. To move the paper or sheets is easy and simple by a pulling action to open the proper place of the buttons, then all the button will be opened.