The researcher "Lamyaa Ahmed Taha Hassan" a study aims to identify (The Effectiveness Of A Proposed Mental Training Program On Catecholamine And The Level Of Performance Of Some Basic Skills For Beginners Handball), The researcher used a semi-experimental design for one group with a pre-post measurement, The sample included (15) beginners handball from the handball team of the sports school for boys in Minya Al-Qamh city - Sharkia Governorate for the academic year 2017 /2018, This program have continue for (8) weeks by (3) units per-week,The results of this study showed that A Proposed Mental Training Program led to an improvement in the levels of blood catecholamines represented in (epinephrine- light epinephrine- dopamine), it also led to an improvement in the level of some mental skills (relaxation- mental perception- attention concentration), and some Basic skills (passing- dribbling- shooting) under discussion, The researcher recommended the necessity of using mental training programs and mental skills (mental visualization- relaxation- attention focus) for their effectiveness in developing the level of skill performance in all competitive sports activities.