(1)專一性強，活性高。生物體農藥中，天(tian)敵(di)昆(kun)(kun)蟲、捕食螨常為寡食性(xing)(xing)(xing)或專性(xing)(xing)(xing)寄生；昆(kun)(kun)蟲病原真菌(jun)、細菌(jun)、線(xian)蟲、病毒、微孢子蟲等均(jun)是(shi)從感病昆(kun)(kun)蟲中分離(li)出來，經(jing)人工繁殖再作用于(yu)該種昆(kun)(kun)蟲；植(zhi)物(wu)體農藥更(geng)是(shi)有針對(dui)性(xing)(xing)(xing)地對(dui)某一種特定(ding)功能基因進行定(ding)向(xiang)重組或改(gai)造(zao)的活體植(zhi)物(wu)；生物(wu)化學農藥的專一性(xing)(xing)(xing)也較(jiao)強，如昆(kun)(kun)蟲性(xing)(xing)(xing)信(xin)息素(su)只對(dui)同種昆(kun)(kun)蟲有效。
(2)對環境(jing)安全(quan)(quan)，對哺(bu)乳動物(wu)及非(fei)靶標生(sheng)(sheng)物(wu)相對安全(quan)(quan)。生(sheng)(sheng)物(wu)農藥均是天(tian)然(ran)存在的活體生(sheng)(sheng)物(wu)或(huo)化合(he)物(wu)，在環境(jing)中會自然(ran)代謝，參與(yu)能(neng)量與(yu)物(wu)質循環,不易產生(sheng)(sheng)殘留，引起生(sheng)(sheng)物(wu)富集現象。生(sheng)(sheng)物(wu)體農藥均是活體生(sheng)(sheng)物(wu)，因其多具有很(hen)強的專一性而對哺(bu)乳動物(wu)較為安全(quan)(quan)。
(3)作用(yong)(yong)(yong)(yong)方(fang)式特異。生(sheng)物(wu)(wu)體農藥(yao)可通(tong)(tong)過(guo)捕食(shi)、寄生(sheng)、拮(jie)抗(kang)等(deng)起到控(kong)制(zhi)(zhi)靶標害物(wu)(wu)的(de)作用(yong)(yong)(yong)(yong)。信(xin)息素類生(sheng)物(wu)(wu)化學農藥(yao)主(zhu)要通(tong)(tong)過(guo)引誘(you)、忌(ji)避、聚(ju)集等(deng)起作用(yong)(yong)(yong)(yong)。蛋白或(huo)糖激發子等(deng)生(sheng)物(wu)(wu)農藥(yao)可通(tong)(tong)過(guo)誘(you)導寄主(zhu)植(zhi)物(wu)(wu)產生(sheng)抗(kang)性而避免(mian)或(huo)減弱有害生(sheng)物(wu)(wu)的(de)影響。植(zhi)物(wu)(wu)源殺(sha)蟲(chong)(chong)劑除具有與有機合(he)成(cheng)殺(sha)蟲(chong)(chong)劑相(xiang)同的(de)作用(yong)(yong)(yong)(yong)方(fang)式（觸殺(sha)、胃毒、熏蒸(zheng)）外(wai)，還表現(xian)出拒食(shi)、抑制(zhi)(zhi)生(sheng)長發育、忌(ji)避、忌(ji)產卵、麻醉(zui)、抑制(zhi)(zhi)種(zhong)群形成(cheng)等(deng)特異的(de)作用(yong)(yong)(yong)(yong)方(fang)式，且往往同一(yi)種(zhong)農藥(yao)具有多種(zhong)作用(yong)(yong)(yong)(yong)方(fang)式。
（4）作用機理不同(tong)于常規農(nong)(nong)藥。傳統(tong)(tong)的(de)殺(sha)蟲(chong)(chong)(chong)劑大多是神(shen)經毒劑，而生(sheng)物農(nong)(nong)藥，尤(you)其是生(sheng)物化學(xue)農(nong)(nong)藥的(de)作用機理較(jiao)復雜。如印楝素(su)對昆(kun)蟲(chong)(chong)(chong)具有強(qiang)烈的(de)拒食、胃毒、觸殺(sha)以及抑制生(sheng)長(chang)發育活性(xing)(xing)，其作用機理主要是干擾昆(kun)蟲(chong)(chong)(chong)的(de)化感系(xi)統(tong)(tong)而影響其行(xing)為；擾亂昆(kun)蟲(chong)(chong)(chong)內分泌系(xi)統(tong)(tong)而影響其生(sheng)長(chang)發育；由(you)綜合性(xing)(xing)、系(xi)統(tong)(tong)性(xing)(xing)效應(ying)而引致昆(kun)蟲(chong)(chong)(chong)周身性(xing)(xing)、系(xi)統(tong)(tong)性(xing)(xing)生(sheng)理病變等。
（5）多(duo)種成分協(xie)同作用(yong)而致害(hai)蟲難以(yi)產生(sheng)(sheng)抗藥(yao)性(xing)。長期(qi)大(da)量使用(yong)化學農藥(yao)會使害(hai)蟲產生(sheng)(sheng)抗藥(yao)性(xing)。生(sheng)(sheng)物(wu)農藥(yao)，尤其是植(zhi)(zhi)物(wu)源(yuan)生(sheng)(sheng)物(wu)化學農藥(yao)往往是多(duo)成分起(qi)作用(yong)，且這些次(ci)生(sheng)(sheng)代謝物(wu)是在(zai)植(zhi)(zhi)物(wu)與昆蟲的協(xie)同進化中產生(sheng)(sheng)的，是自然界長期(qi)選擇的結果，故昆蟲不易對其產生(sheng)(sheng)抗性(xing)。
（6）開(kai)發(fa)利(li)用(yong)途徑多(duo)種(zhong)多(duo)樣。生物(wu)(wu)(wu)農藥可通過多(duo)種(zhong)途徑來(lai)開(kai)發(fa)利(li)用(yong)：天敵類(lei)動物(wu)(wu)(wu)體農藥可人(ren)工繁(fan)育，也(ye)引種(zhong)釋放；微生物(wu)(wu)(wu)類(lei)生物(wu)(wu)(wu)農藥可以發(fa)酵生產而直接(jie)利(li)用(yong)，也(ye)可經基因重組后(hou)利(li)用(yong)；生物(wu)(wu)(wu)化(hua)學類(lei)農藥可直接(jie)利(li)用(yong)或經人(ren)工完(wan)全合成(cheng)后(hou)利(li)用(yong)，也(ye)可采用(yong)生物(wu)(wu)(wu)工程(cheng)技術(shu)定(ding)向培養，或采用(yong)基因重組轉化(hua)為(wei)植物(wu)(wu)(wu)體農藥。
