International Children's Day yog lub Rau Hli 1st txhua xyoo. Txhawm rau quaj ntsuag rau Lidice tua neeg thaum lub Rau Hli 10, 1942 thiab tag nrho cov menyuam yaus uas tuag hauv kev tsov rog thoob ntiaj teb, tawm tsam kev tua neeg thiab lom cov menyuam yaus, thiab tiv thaiv menyuam txoj cai.
Lub Kaum Ib Hlis 1949, International Federation of Democratic Women tau tuav lub rooj sib tham hauv Moscow. Cov neeg sawv cev ntawm Tuam Tshoj thiab lwm lub teb chaws npau taws nthuav tawm cov kev ua phem ntawm kev tua neeg thiab lom cov menyuam yaus los ntawm imperialists thiab cov neeg tawm tsam ntawm ntau lub tebchaws. Lub rooj sib tham tau txiav txim siab ua kom lub Rau Hli 1st txhua xyoo ua International Children's Day. Nws yog lub koob tsheej uas tsim los tiv thaiv menyuam txoj cai kom muaj sia nyob, kev saib xyuas kev noj qab haus huv, kev kawm, thiab kev saib xyuas hauv txhua lub tebchaws hauv ntiaj teb, txhawm rau txhim kho menyuam lub neej, thiab tawm tsam kev tsim txom menyuam yaus thiab lom. Ntau lub tebchaws hauv ntiaj teb tau xaiv lub Rau Hli 1 ua hnub so rau menyuam yaus.