| 寄生虫 | jì shēng chóng | parasite (biology) / (fig.) freeloader |   |
| 寄生物 | jì shēng wù | parasite | |
| 寄生者 | jì shēng zhě | parasite (human) | |
| 米虫 | mǐ chóng | rice weevil / (fig.) sponger / parasite | |
| 寄生 | jì shēng | to live in or on another organism as a parasite / to live by taking advantage of others / parasitism / parasitic | |
| 蛔虫 | huí chóng | roundworm / ascarid / (esp.) Ascaris lumbricoides, a human parasite / (fig.) person who knows what another person is thinking / a mind reader | |
| 吸虫 | xī chóng | trematoda / fluke / trematode worm, approx 6000 species, mostly parasite, incl. on humans | |
| 蛊 |  gǔ | arch. legendary venomous insect / to poison / to bewitch / to drive to insanity / to harm by witchcraft / intestinal parasite | |
| 打虫 | dǎ chóng | to swat an insect / to get rid of intestinal parasite with drugs | |
| 吃閒饭 | chī xián fàn | to live as a parasite / doing nothing to earn one's keep | |
| 吸虫纲 | xī chóng gāng | Class Trematoda / fluke / trematode worm, a parasite incl. on humans | |
| 四体不勤，五谷不分 | sì tǐ bù qín , wǔ gǔ bù fēn | never move your four limbs, can't distinguish the five crops (idiom) / living as a parasite | |
| 蟠尾丝虫 | pán wěi sī chóng | Onchocerca volvulus, the filarial parasite worm causing "river blindness" or onchocerciasis, the second most common cause of blindness in humans | |
| 蟠尾丝虫症 | pán wěi sī chóng zhèng | "river blindness" or onchocerciasis, the second most common cause of blindness in humans, caused by the filarial parasite worm Onchocerca volvulus | |
| 复殖目 | fù zhí mù | Order Digenea (including trematode worms that parasite humans) | |
| 贾第虫 | Jiǎ dì chóng | Giardia lamblia protozoan parasite that inhabits the gut | |
| 贾第虫属 | Jiǎ dì chóng shǔ | Giardia lamblia protozoan parasite that inhabits the gut | |
| 贾第虫病 | Jiǎ dì chóng bìng | Giardiasis, a form of gastro-enteritis caused by infection of gut by Giardia lamblia protozoan parasite | |
| 阿的平 | ā dì píng | atabrine or quinacrine, used as antimalarial drug and antibiotic against intestinal parasite giardiasis | |
| 经食物传播的寄生虫 | | food-borne parasite | |
| 计划生育、营养和寄生虫防治综合项目 | | Integrated Project on Family Planning, Nutrition and Parasite Control | |
| 寄生虫指数 | | parasite index / parasite rate | |
| 寄生虫发病率 | | parasite index / parasite rate | |
| 初级保健防治寄生虫模式 | | Parasite Control Model of Primary Health Care | |
