The invention relates to a construction method for bank protection engineering construction through an integral steel sliding formwork structure. The construction method comprises the following stepsthat S1, the position of a retaining wall is planned according to the bank situation, surveying and setting out are carried out, and a foundation pad is pre-laid; S2, a sliding rail is laid on the ground along the foundation pad, a steel sliding formwork is installed, and the installed steel sliding formwork is put on the sliding rail; S3, concrete is poured into the steel sliding formwork, 24 hours later, the steel sliding formwork is tested to slide for the first time, and debugging is carried out; S4, after debugging is completed, the steel sliding formwork forwards moves along the slidingrail by a distance smaller than the length of the steel sliding formwork every time, rock block concrete is poured, 24 hours later after the rock block concrete is poured, the steel sliding formwork can be slid and moved again, rock block concrete is poured until pouring of the retaining wall is completed; and S5, after the retaining wall is completely poured, the steel sliding formwork is dismounted. The retaining wall body is poured in situ through the integral steel sliding formwork, the operation process is simple, few auxiliary materials are used, the cost is low, the working efficiency is high, and the poured retaining wall body is high in strength and good in flatness.