Kachlík began his directing career by working as second director, with Josef Mach and Bořivoj Zeman. He then made his lead-directorial debut in 1961 with the drama Červnové dny, and continued to direct films until 1988. Between 1961 and 1983 Kachlík wrote multiple screenplays, and over the course of his life he wrote a total of five books, with the last one being written in 2003. Between the years of 1971-1992 he taught at FAMU.
