After the exclusion of illegal evidence in this case, the evidence accepted by the court of first instance can no longer form a complete proof system, and it is impossible to prove that Chen Zhuohao committed murder with evidence that has not been excluded, nor can it be concluded that Chen Zhuohao's killing of the victim is unique and exclusive. This is a classic case of illegal evidence exclusion, which has important guiding significance for future practice. The case shows the exclusion of illegal evidence in various situations: when Chen Zhuohao was interrogated for the first time, the interrogation place did not meet the requirements and was excluded because the way of obtaining evidence was illegal; Chen Zhuohao's two guilty confessions are highly similar, and they are suspected to be used to lure confessions. The case-handling personnel cannot give a reasonable explanation, which means that they cannot give evidence and do not rule out the use of illegal methods to obtain evidence; Chen Zhuohao's audio and video recording was incomplete, and the case-handling personnel could not prove that there was no threat or intimidation during the audio and video recording, so they were excluded. The search warrant cannot rule out the reasonable doubt that it will be reissued afterwards, and it is invalid because of illegal search, and the material evidence obtained by the search is also ruled out because of illegal evidence collection means; The medical registration of the detention center was excluded because of signature fraud. It can be said that the process of excluding illegal evidence in this case includes various forms of illegal evidence, exclusion procedures, burden of proof, proof standards and so on. , which has the guiding significance of textbooks.

Chen Zhuohao was acquitted because of the exclusion of illegal evidence. Who is the real murderer of Zhang Lulu? It is mentioned in the judgment that "Chen Zhuohao is the key suspect in the investigation organ, which has certain factual basis, and the case detection is reasonable, which is in line with the investigation law". It is only because the illegal acquisition of some evidence is ruled out that Chen Zhuohao is innocent of murder because of insufficient evidence. If one day, the investigation organ obtains enough evidence again, it is still possible to sue Chen Zhuohao again. What is more worthy of reflection is that the investigation organ should learn from the lessons of this case, improve its ability to detect cases, collect evidence according to law, and detect the murder case of Zhang Lulu as soon as possible, so that the real murderer can reappear and justice can be returned to society.