The invention relates to the technical field of slope supporting in civil engineering, and discloses an in-hole point anchor anti-slide pile blocking wall. The in-hole point anchor anti-slide pile blocking wall is used for blocking the side slope capable of forming a collapsed arch. The structure of the in-hole point anchor anti-slide pile retaining wall comprises anti-slide piles, anchor cables,a pile top beam and soil blocking plates; the anti-slide piles are arranged in parallel according to certain intervals; the pile top beam is located at the top part of the anti-slide piles and are connected with the multiple anti-slide piles; the soil blocking plates are located between the anti-slide piles, are connected with the anti-slide piles on two sides, and are used for providing resistance for rock soil in horizontal collapse arches formed between the adjacent anti-slide piles of the side slope; the bottoms of the anti-slide piles are provided with extending part which is integrally formed and is used for extending into the preset length of the slope; anchor points are formed on each slide-resistant pile at a preset distance, and each anchor point is connected with at least one anchor cable; and areas which can independently provide horizontal stress resistance need by the anchor cables on the peripheries of the anchor points on the anti-slide piles are point anchor sections,and non-point anchor sections are arranged between the point anchor sections. The invention further discloses an in-hole point anchor anti-slide pile retaining wall forming method. According to the in-hole point anchor anti-slide pile blocking wall and the forming method, structure sizes and steel bars of the anti-slide piles are greatly reduced, manufacturing cost is reduced, and the constructionperiod is shortened.