There are a huge amount of scientific and commercial applications written with a focus on sequential
execution. Running such programs on multiprocessor systems is possible, but without taking
advantage of these systems. To execute a program with these capabilities in mind, it is often necessary
to rewrite the program. However, this is not always the best choice. In this work, the possibility of
parallel execution of programs written in functional languages is considered, the principle of operation
of the proposed interpreter of a functional programming language is described in detail. As an example
of functional language was chosen Guile. Parallelism in it is achieved through parallel execution of
function arguments. The result of this work can be used as an example of building programming
interfaces for other programming languages.