全(quan)城(cheng)(cheng)(cheng)是一座400×400平方米(mi)的方形(xing)古(gu)(gu)城(cheng)(cheng)(cheng)址。城(cheng)(cheng)(cheng)墻四角(jiao)正(zheng)處(chu)在(zai)東南西北方位線(xian)上(shang)。殘(can)高(gao)4-5米(mi)底(di)寬(kuan)15-20米(mi),城(cheng)(cheng)(cheng)之南北各一城(cheng)(cheng)(cheng)門。古(gu)(gu)城(cheng)(cheng)(cheng)內(nei)西北角(jiao)建(jian)(jian)有90×90平方米(mi)的正(zheng)方形(xing)小(xiao)城(cheng)(cheng)(cheng)(居民稱之為馬圈),東開門,高(gao)處(chu)達3米(mi)多,底(di)寬(kuan)5米(mi)。在(zai)城(cheng)(cheng)(cheng)內(nei)拾到大(da)量戰(zhan)國、秦(qin)漢(han)時代的陶片、貨幣、兵器、建(jian)(jian)筑構件等。史料(liao)記載,此(ci)城(cheng)(cheng)(cheng)乃為戰(zhan)國東漢(han)時代的古(gu)(gu)城(cheng)(cheng)(cheng),形(xing)制保(bao)存(cun)完好。土城(cheng)(cheng)(cheng)子這個地(di)區名也由(you)此(ci)城(cheng)(cheng)(cheng)而命之。
土(tu)城(cheng)子古城(cheng)由自治區文(wen)(wen)物保(bao)護單(dan)(dan)位升級文(wen)(wen)物保(bao)護單(dan)(dan)位。2013年5月(yue)3日(ri),中華(hua)人民共和國(guo)國(guo)務院公布第七批國(guo)家(jia)文(wen)(wen)物保(bao)護單(dan)(dan)位,其中土(tu)城(cheng)子古城(cheng)榜上。