浙東(dong)革(ge)命根(gen)據(ju)地紀念館位(wei)于(yu)余姚市(shi)梁弄鎮橫坎(kan)頭村,借址于(yu)省級文物保(bao)護單位(wei)中共(gong)浙東(dong)區(qu)委(wei)舊(jiu)址內(nei)。中共(gong)浙東(dong)區(qu)委(wei)舊(jiu)址為木結(jie)構二(er)層清末民居,由主樓及翼樓等建筑(zhu)組(zu)合而(er)成(cheng)。大(da)整幢建筑(zhu)掩映(ying)于(yu)紅(hong)崗勁松之(zhi)中,莊嚴肅穆,是廣(guang)大(da)人民群眾特別(bie)是青少(shao)年接(jie)受愛(ai)國主義革(ge)命傳統教育的重要場所。
1942年(nian)(nian)7月(yue),為(wei)加強對浙(zhe)(zhe)(zhe)東(dong)(dong)抗日斗(dou)爭的(de)領導(dao)(dao),中(zhong)共(gong)浙(zhe)(zhe)(zhe)東(dong)(dong)區(qu)委(wei)員會(hui)在(zai)慈北(bei)成立(li)。之后(hou),中(zhong)共(gong)浙(zhe)(zhe)(zhe)東(dong)(dong)區(qu)委(wei)根(gen)據浙(zhe)(zhe)(zhe)東(dong)(dong)抗戰(zhan)(zhan)的(de)新形(xing)勢(shi),確定了“堅持三北(bei),開辟四明”的(de)戰(zhan)(zhan)略方針(zhen),于1942年(nian)(nian)10月(yue)進軍(jun)四明山區(qu)。1943年(nian)(nian)4月(yue),姚南(nan)重鎮梁弄(nong)(nong)獲得解(jie)放后(hou)不久,中(zhong)共(gong)浙(zhe)(zhe)(zhe)東(dong)(dong)區(qu)委(wei)及三北(bei)游擊司(si)令(ling)(ling)部(后(hou)改名新四軍(jun)浙(zhe)(zhe)(zhe)東(dong)(dong)游擊縱(zong)隊司(si)令(ling)(ling)部)等黨(dang)政(zheng)軍(jun)機(ji)關便進駐梁弄(nong)(nong),區(qu)黨(dang)委(wei)設在(zai)橫坎頭村,司(si)令(ling)(ling)部設在(zai)梁弄(nong)(nong)曉嶺街“小源和”內,從此(ci),梁弄(nong)(nong)成為(wei)浙(zhe)(zhe)(zhe)東(dong)(dong)抗日根(gen)據地的(de)政(zheng)治、經(jing)濟、軍(jun)事和文化(hua)中(zhong)心,浙(zhe)(zhe)(zhe)東(dong)(dong)抗日根(gen)據地成為(wei)抗戰(zhan)(zhan)時期(qi)全國(guo)(guo)十九個抗日根(gen)據地之一(yi)。中(zhong)國(guo)(guo)共(gong)產(chan)黨(dang)在(zai)梁弄(nong)(nong)領導(dao)(dao)浙(zhe)(zhe)(zhe)東(dong)(dong)軍(jun)民(min),團結(jie)奮斗(dou),浴血奮戰(zhan)(zhan),譜寫(xie)了無數曲勝(sheng)(sheng)利(li)的(de)凱歌(ge)。抗戰(zhan)(zhan)勝(sheng)(sheng)利(li)后(hou),為(wei)實現全國(guo)(guo)和平,新四軍(jun)浙(zhe)(zhe)(zhe)東(dong)(dong)游擊縱(zong)隊主力奉(feng)命(ming)北(bei)撤,留下(xia)極少數同志(zhi)堅持浙(zhe)(zhe)(zhe)東(dong)(dong)地區(qu)的(de)斗(dou)爭,粉碎(sui)了國(guo)(guo)民(min)黨(dang)反動派的(de)多次“清剿”,1949年(nian)(nian)5月(yue)配合南(nan)下(xia)大軍(jun)解(jie)放了余姚。
為(wei)記錄(lu)和(he)紀(ji)念(nian)浙東(dong)抗日軍民(min)的歷(li)史(shi)功(gong)績,開展(zhan)愛國主義和(he)革(ge)命(ming)(ming)傳統教育(yu),全國解放(fang)(fang)后,余姚地方政府就著手(shou)建(jian)立革(ge)命(ming)(ming)紀(ji)念(nian)館(guan)(guan)。1978年(nian)(nian)11月,四明(ming)山(shan)革(ge)命(ming)(ming)紀(ji)念(nian)館(guan)(guan)由(you)正(zheng)蒙小(xiao)學遷址到中(zhong)共浙東(dong)區(qu)委(wei)舊址內,并(bing)于1981年(nian)(nian)7月1日正(zheng)式對外開放(fang)(fang)。1992年(nian)(nian),為(wei)紀(ji)念(nian)中(zhong)共浙東(dong)區(qu)委(wei)成立暨浙東(dong)抗日根(gen)據地創建(jian)五十周年(nian)(nian),對紀(ji)念(nian)館(guan)(guan)進(jin)行整修和(he)重(zhong)新陳列布(bu)展(zhan),同(tong)時,四明(ming)山(shan)革(ge)命(ming)(ming)紀(ji)念(nian)館(guan)(guan)更(geng)(geng)名為(wei)浙東(dong)革(ge)命(ming)(ming)根(gen)據地紀(ji)念(nian)館(guan)(guan)。1996年(nian)(nian)至2000年(nian)(nian),紀(ji)念(nian)館(guan)(guan)進(jin)行了擴建(jian)和(he)陳列更(geng)(geng)新,增加(jia)了觀(guan)眾休息和(he)活動的場所等(deng)新的功(gong)能區(qu),更(geng)(geng)新了“浙東(dong)革(ge)命(ming)(ming)根(gen)據地史(shi)料陳列”,為(wei)浙東(dong)革(ge)命(ming)(ming)根(gen)據地紀(ji)念(nian)館(guan)(guan)整體功(gong)能的發揮奠定了良好的基礎(chu)。