The paper deals with influence of creative writing on vocabulary’s extent in the written manifest of non-native speakers in compare with classical methods used in foreign language didactics. There are presented results of qualitative action research, probe, which was backed by Grant Agency of Charles University. Its respondents were 30 students of Czech as a foreign/second language levelled A2–B2 according to CEFR, from Charles University, Institute of Czech Studies. The respondents were divided into both two control and experimental groups. For analyzing the vocabulary extent, the Mistrík’s formula of repeated words Index was used and applied to the written works of the respondents. Next, the knowledge synonyms and antonyms was observed, on the entrance and final subtests. Probe’s result showed, that after using two different methods within one semester there was a comparable decrease of word’s rep, only half of the respondents, in both control and experimental groups I. In control group II, there was a slight decrease in rep, but experimental group II has a slight increase. The compare knowledge of synonyms and antonyms results that after using two different methods in both control and experimental groups causes increase, the growth was only in the control and experimental group I comparable, however. Due to similar research’s absence for Czech as a foreign/second language, there are briefly presented other researches on creative writing in foreign language tuition.