The study about Productivity and mortality ofPeriplaneta americana (Linnaeus)(Blattaria; Blattidae) at laboratory was done at laboratory of entomology, Center for Health Ecology Research andDevelopment, National Institute of Health Research and Development, Ministry of Health, Jakarta. P. americanaspecimens were obtained from the result of catching cockroach at home, then being takecare in laboratory. Maintenance place used is transparent plastic tube or bowl with 3 cm diameter and6 cm high up to 26 cm diameter and 26 cm high, with wood partition inside and covered by cloth orgauze. The maintenance are done in individually and colony. The observation includes the amount of egg capsules(ootheca) produced by every individual female ofP. americana;the amount of nymphcracked from every egg capsule; the per month mortality from the nymph taken care colonially; theamount of individual that can reach adult stadium, and sexual comparison at adult stadium. The result of this research indicates that a female ofP. americana can produce up to 86 egg capsules. Every eggcapsule can produce 13 nymphs in average. The mortality of one month old nymph in average can reach 44.67%- 50.4%, two month old nymph in average can reach 61.33%- 62.49% and three monthold nymph in average can reach 66.72%- 68.61%. The amount of individual P. americana that canreach adult stadium is only about 20%- 30%. Comparison between sexual kinds ofP. americanaat adult stadium is very significant; the amount of female is more than the amount of male.