In this work photolytic degradation of albendazole was investigated under sumilated Solar radiation. Beside direct, indirect photolitic degradation was investigated in different solutions: MilliQ water, humic acids (1, 5 and 10 mg L^-1), nitrates solutions (1 and 3 mg L^-1), carbonates solutions ( 80 and 420 mg L^-1) and buffer solutions with pH-values of 5, 7 and 9. Results of photolytic degradation show that the concentration of albendazole was reduced more than 40 % in the first 15 minutes of radiation. The biggest increase of half-life of albendazole was observed in solution of humic acids with concentration of 10 mg L^-1 while the 5 mg L^-1 solution had the biggest effect on the decline of half-life. Compared to MilliQ water, in the presence of nitrates no significant effect on photolytic degradation of albendazole was observed. For carbonates, increasement of half-life of albendazole was determined. Investigating the effect of buffer solutions on the half-life of albendazole different effects was oserved; the buffer with the pH value 5 increased hal-lafie while the buffer with the pH value 7 reduced half laffe of photolytice degradation of albendazoleit. The biggest reduction of albendazole concentration was determined in the 5 mg L^-1 solution of humic acids, at the end of experiments albendazole concetration was 9,87 % of the starting value. The lowest reduction of concentration was detected in the buffer solution with the pH value 7, the final concentration was 41,53 % of the starting value. The results have showed that direct photolysis of albendazole can be a significiant elimination process for albendazole in the environment. It is is a major process in its degradation. In all experiments, complete degradation of albendazole was not obtained.