The invention provides an ejecting mechanism for a side inclined hole. The effect of demolding a large-side area and the side hole by one core pulling mechanism respectively is realized. A moving mold(1) is provided with an oil cylinder (5); the oil cylinder (5) is provided with a pushing rod (6); a pushing block (8) is in threaded connection with the pushing rod (6); a large sliding block (4) isconnected with the pushing block (8); an insert (9) is provided with a slide (10); an elastic pin (11) is glidingly arranged inside the slide (10); a profile fit with the side hole (02) is arranged at one end of the elastic pin (11); a base (12) is fixedly arranged at the other end; a large sliding block (4) is provided with a pipeline (13); the elastic pin (11) is sleeved with a spring (14); thespring (14) is located in the pipeline (13); and the elastic pin (11) comprises an ejecting pin (22), an ejecting pin base (23) and an ejecting pin fixing pipe.