合(he)(he)同(tong)(tong)形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)，是指當事人(ren)合(he)(he)意的(de)(de)外在表現形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)，是合(he)(he)同(tong)(tong)內容的(de)(de)載體。我國(guo)《合(he)(he)同(tong)(tong)法》第(di)10條(tiao)：當事人(ren)訂(ding)立合(he)(he)同(tong)(tong)，有書(shu)面(mian)(mian)形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)，口(kou)頭形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)和其他形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)。法律，行政法規(gui)規(gui)定采(cai)用書(shu)面(mian)(mian)形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)的(de)(de)，應該采(cai)用書(shu)面(mian)(mian)形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)。當事人(ren)約定采(cai)用書(shu)面(mian)(mian)形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)的(de)(de)，應當采(cai)用書(shu)面(mian)(mian)形(xing)(xing)(xing)(xing)(xing)式(shi)(shi)(shi)。

(1)合(he)(he)同(tong)(tong)(tong)的(de)基本(ben)條(tiao)款要具備，尤(you)其(qi)是交易的(de)內(nei)容(rong)、履(lv)行方式和期限(xian)、違約責任要約定(ding)清楚。(2)查閱國家對該(gai)交易有無(wu)特(te)別規定(ding)，目的(de)在(zai)(zai)于確定(ding)雙方的(de)權利義務是否合(he)(he)法有效。(3)向律師(shi)事務所(suo)、公(gong)(gong)司法律顧問(wen)咨詢相關(guan)業務的(de)實際開(kai)展(zhan)情況(kuang)，了解業務發生(sheng)糾紛的(de)概率和糾紛的(de)起因(yin)、種類，以便在(zai)(zai)訂(ding)立合(he)(he)同(tong)(tong)(tong)時(shi)盡可能(neng)(neng)避免同(tong)(tong)(tong)樣(yang)缺(que)憾的(de)發生(sheng)。(4)可能(neng)(neng)的(de)話，通過行政機(ji)(ji)關(guan)的(de)公(gong)(gong)證、律師(shi)見(jian)證和公(gong)(gong)證，通過相關(guan)機(ji)(ji)構的(de)中介作(zuo)用(yong)(yong)，使合(he)(he)同(tong)(tong)(tong)的(de)內(nei)容(rong)盡可能(neng)(neng)完備。(5)簽署(shu)合(he)(he)同(tong)(tong)(tong)時(shi)合(he)(he)同(tong)(tong)(tong)表面(mian)要字(zi)跡(ji)清楚，整潔，推薦(jian)使用(yong)(yong)合(he)(he)同(tong)(tong)(tong)專(zhuan)用(yong)(yong)紙張打印。