This study aimed to identify the challenges of practicing the skills of the 21st century, and suggestions of improvement in implementing 21st century learning among Arabic language teachers in secondary schools in Saudi Arabia. The study applied qualitative research methodology through using a questionnaire instrument. The questionnaire was applied to a random sample, consisting of 38 participants including 23 male and 15 female Arabic language teachers in secondary schools in Baha Governorate, Kingdom of Saudi Arabia. The results showed that there are several challenges faced by Arabic language teachers where was resources and facilities the highest challenges, followed by time and finally, knowledge and skills, and was reduce unrelated tasks, the highest suggestion of improvement in implementing 21st century learning, followed by professional development courses, and finally teaching module, resources and facilities (as reducing the quantity of school activities that have nothing to do with learning). The study recommended conducting additional research and Provide professional development programs for professors and teachers to effectively incorporate and teach 21st century skills, and also to prioritize skills that are rated low in practice, especially in the ICT domain, based on the study's results to enhance teaching practices.