遺址(zhi)發(fa)(fa)現文物近千件,其中陶(tao)器(qi)475件,石(shi)(shi)器(qi)169件,骨(gu)(gu)器(qi)六七十件,銅器(qi)14件。陶(tao)器(qi)有(you)(you)(you)(you)夾(jia)沙(sha)和硬(ying)陶(tao)兩種,前(qian)者(zhe)皆手(shou)制,后者(zhe)輪(lun)(lun)制,且有(you)(you)(you)(you)花紋(wen)。陶(tao)器(qi)很少完(wan)整,其中以(yi)網(wang)墜為多。石(shi)(shi)器(qi)有(you)(you)(you)(you)斧(fu)(fu)、錛、鑿、刀(dao)、鏃、錐(zhui)、環、紡(fang)輪(lun)(lun)、磨(mo)石(shi)(shi)等。石(shi)(shi)刀(dao)全部(bu)穿孔(kong)(kong)(kong),有(you)(you)(you)(you)單(dan)(dan)孔(kong)(kong)(kong)、雙孔(kong)(kong)(kong),也有(you)(you)(you)(you)磨(mo)槽(cao)后穿孔(kong)(kong)(kong)的(de)。骨(gu)(gu)角器(qi)有(you)(you)(you)(you)針、錐(zhui)、紡(fang)輪(lun)(lun)、磨(mo)石(shi)(shi)等。石(shi)(shi)刀(dao)全部(bu)穿孔(kong)(kong)(kong),有(you)(you)(you)(you)單(dan)(dan)孔(kong)(kong)(kong)、雙孔(kong)(kong)(kong),也有(you)(you)(you)(you)磨(mo)槽(cao)后穿孔(kong)(kong)(kong)的(de)。骨(gu)(gu)角器(qi)有(you)(you)(you)(you)針、錐(zhui)、紡(fang)輪(lun)(lun)、穿孔(kong)(kong)(kong)獸牙、穿孔(kong)(kong)(kong)骨(gu)(gu)片(pian)等。銅器(qi)有(you)(you)(you)(you)斧(fu)(fu)、鋮、刀(dao)、鑿、環、魚(yu)鉤(gou)和裝(zhuang)飾品,還發(fa)(fa)現半塊陶(tao)范(fan),范(fan)上花紋(wen)與一把銅斧(fu)(fu)花紋(wen)相吻合。此外,遺址(zhi)中有(you)(you)(you)(you)四處發(fa)(fa)現谷(gu)物,出(chu)土時均(jun)成黑色。經有(you)(you)(you)(you)關(guan)部(bu)門(men)鑒定,出(chu)土谷(gu)物屬于粳稻(dao)類型。還有(you)(you)(you)(you)大量獸骨(gu)(gu)出(chu)土。
經(jing)中國(guo)科學院(yuan)考古研究所實驗(yan)室放射性(xing)碳素測定,海門(men)口出土(tu)圓木樁,距今已3115±90年(nian)(nian)(nian)(公元(yuan)(yuan)前1150±90年(nian)(nian)(nian))。經(jing)過樹輪較(jiao)正后的數據為公元(yuan)(yuan)前1335±155年(nian)(nian)(nian)。
海門口遺(yi)址(zhi)出土文物,屬銅(tong)石并(bing)用時(shi)期(qi)(qi)文化,這一遺(yi)址(zhi)的(de)(de)(de)(de)發(fa)(fa)現(xian),反映出云南原(yuan)始(shi)社會末期(qi)(qi)之(zhi)社會面貌,說(shuo)明(ming)當(dang)時(shi)這里已形(xing)(xing)成一個濱水的(de)(de)(de)(de)村落,村落房屋為(wei)一種(zhong)干欄(lan)建筑,與近代(dai)云南一些少數(shu)民族房屋相似。遺(yi)址(zhi)發(fa)(fa)現(xian)的(de)(de)(de)(de)器物,具(ju)有洱(er)海地(di)(di)區新石器文化若(ruo)干特征,無論石器或骨器,都磨得(de)整齊精致,陶器開(kai)始(shi)出現(xian)輪制(zhi)痕跡,說(shuo)明(ming)整個社會生產(chan)力(li)有了(le)飛躍的(de)(de)(de)(de)進步。特別值得(de)注意的(de)(de)(de)(de)是(shi),發(fa)(fa)現(xian)的(de)(de)(de)(de)14件銅(tong)器中(zhong)有斧、刀、鑿裝飾品和魚(yu)鉤,還有制(zhi)造銅(tong)斧的(de)(de)(de)(de)范,標志著當(dang)地(di)(di)冶(ye)金術的(de)(de)(de)(de)發(fa)(fa)展(zhan)。這些銅(tong)器雖然粗糙、簡單,但后來云南光輝燦爛的(de)(de)(de)(de)青銅(tong)文化是(shi)從這里開(kai)始(shi)的(de)(de)(de)(de)。由于生產(chan)工(gong)具(ju)的(de)(de)(de)(de)改造,農業(ye)、畜牧業(ye)和漁獵均很(hen)發(fa)(fa)達。遺(yi)址(zhi)中(zhong)發(fa)(fa)現(xian)的(de)(de)(de)(de)粳稻(dao)大概(gai)一直是(shi)遠古時(shi)期(qi)(qi)云南地(di)(di)區栽培主(zhu)要稻(dao)種(zhong)。從測定的(de)(de)(de)(de)遺(yi)址(zhi)形(xing)(xing)成時(shi)間看,當(dang)時(shi)云南剛剛跨進階(jie)級社會的(de)(de)(de)(de)大門,而(er)我國中(zhong)原(yuan)地(di)(di)區正(zheng)處在殷商晚(wan)期(qi)(qi)。截(jie)止(zhi)目前所知,海門口遺(yi)址(zhi)是(shi)云南銅(tong)石并(bing)用文化早發(fa)(fa)源地(di)(di),標志著云南地(di)(di)區利用金屬的(de)(de)(de)(de)開(kai)始(shi)。