遺(yi)(yi)址(zhi)發現(xian)文物近(jin)千件(jian),其(qi)中陶(tao)器(qi)(qi)(qi)475件(jian),石(shi)(shi)器(qi)(qi)(qi)169件(jian),骨(gu)器(qi)(qi)(qi)六七(qi)十(shi)件(jian),銅(tong)(tong)(tong)器(qi)(qi)(qi)14件(jian)。陶(tao)器(qi)(qi)(qi)有(you)(you)夾沙和硬(ying)陶(tao)兩種,前者皆手制,后(hou)者輪(lun)制,且(qie)有(you)(you)花(hua)紋(wen)(wen)。陶(tao)器(qi)(qi)(qi)很少完整,其(qi)中以網墜為多。石(shi)(shi)器(qi)(qi)(qi)有(you)(you)斧(fu)(fu)、錛、鑿、刀、鏃(zu)、錐(zhui)(zhui)、環、紡(fang)(fang)輪(lun)、磨(mo)石(shi)(shi)等。石(shi)(shi)刀全部穿(chuan)孔(kong),有(you)(you)單孔(kong)、雙孔(kong),也有(you)(you)磨(mo)槽(cao)后(hou)穿(chuan)孔(kong)的(de)。骨(gu)角器(qi)(qi)(qi)有(you)(you)針(zhen)、錐(zhui)(zhui)、紡(fang)(fang)輪(lun)、磨(mo)石(shi)(shi)等。石(shi)(shi)刀全部穿(chuan)孔(kong),有(you)(you)單孔(kong)、雙孔(kong),也有(you)(you)磨(mo)槽(cao)后(hou)穿(chuan)孔(kong)的(de)。骨(gu)角器(qi)(qi)(qi)有(you)(you)針(zhen)、錐(zhui)(zhui)、紡(fang)(fang)輪(lun)、穿(chuan)孔(kong)獸牙、穿(chuan)孔(kong)骨(gu)片等。銅(tong)(tong)(tong)器(qi)(qi)(qi)有(you)(you)斧(fu)(fu)、鋮、刀、鑿、環、魚鉤(gou)和裝飾品,還發現(xian)半塊陶(tao)范,范上(shang)花(hua)紋(wen)(wen)與一把(ba)銅(tong)(tong)(tong)斧(fu)(fu)花(hua)紋(wen)(wen)相吻合(he)。此(ci)外,遺(yi)(yi)址(zhi)中有(you)(you)四處(chu)發現(xian)谷物,出土(tu)時均(jun)成黑色。經有(you)(you)關部門鑒定,出土(tu)谷物屬于粳稻類型。還有(you)(you)大(da)量獸骨(gu)出土(tu)。
經中國科(ke)學院考古研究所(suo)實驗室放射性碳素測定,海門口出土圓木樁,距今已3115±90年(公元前1150±90年)。經過樹輪(lun)較正(zheng)后的數據為公元前1335±155年。
海門(men)口(kou)遺(yi)(yi)址(zhi)出(chu)(chu)土文物,屬(shu)銅(tong)石(shi)并用時期(qi)文化(hua)(hua),這(zhe)一(yi)遺(yi)(yi)址(zhi)的(de)發(fa)現(xian)(xian),反映出(chu)(chu)云(yun)南原(yuan)始社(she)(she)會(hui)末期(qi)之(zhi)社(she)(she)會(hui)面貌,說明當(dang)(dang)時這(zhe)里(li)已形(xing)成一(yi)個(ge)濱水的(de)村落,村落房屋為(wei)一(yi)種(zhong)(zhong)干欄建筑(zhu),與(yu)近代(dai)云(yun)南一(yi)些少數民族房屋相(xiang)似(si)。遺(yi)(yi)址(zhi)發(fa)現(xian)(xian)的(de)器(qi)物,具有洱海地區(qu)新石(shi)器(qi)文化(hua)(hua)若干特征,無論石(shi)器(qi)或骨器(qi),都磨得(de)整齊精致,陶器(qi)開(kai)始出(chu)(chu)現(xian)(xian)輪制痕(hen)跡,說明整個(ge)社(she)(she)會(hui)生產力有了飛躍的(de)進(jin)(jin)步。特別值得(de)注意的(de)是(shi),發(fa)現(xian)(xian)的(de)14件銅(tong)器(qi)中(zhong)有斧、刀、鑿裝飾品(pin)和魚鉤,還(huan)有制造銅(tong)斧的(de)范,標志著(zhu)當(dang)(dang)地冶金(jin)術的(de)發(fa)展。這(zhe)些銅(tong)器(qi)雖然粗(cu)糙、簡單,但后(hou)來云(yun)南光輝燦爛的(de)青銅(tong)文化(hua)(hua)是(shi)從這(zhe)里(li)開(kai)始的(de)。由于生產工具的(de)改造,農業、畜牧(mu)業和漁獵(lie)均很發(fa)達。遺(yi)(yi)址(zhi)中(zhong)發(fa)現(xian)(xian)的(de)粳稻大概一(yi)直是(shi)遠古時期(qi)云(yun)南地區(qu)栽培主要稻種(zhong)(zhong)。從測定(ding)的(de)遺(yi)(yi)址(zhi)形(xing)成時間看,當(dang)(dang)時云(yun)南剛剛跨進(jin)(jin)階級社(she)(she)會(hui)的(de)大門(men),而我國中(zhong)原(yuan)地區(qu)正處在殷商晚期(qi)。截止目(mu)前(qian)所知,海門(men)口(kou)遺(yi)(yi)址(zhi)是(shi)云(yun)南銅(tong)石(shi)并用文化(hua)(hua)早(zao)發(fa)源(yuan)地,標志著(zhu)云(yun)南地區(qu)利用金(jin)屬(shu)的(de)開(kai)始。